UNITED STATES SECURITIES & EXCHANGE COMMISSION Washington, D.C. 20549 Form 13F Form 13F COVER PAGE Report for the Calendar Year or Quarter Ended: March 31, 2012 Check here if Amendment [ ];Amendment Number: This amendment (Check only one.) :[ ] is a restatement. [ ] adds new holdings entries. Institutional Investment Manager Filing this Report: Name: Petroleum & Resources Corporation Address: 7 St. Paul Street, Suite 1140 Baltimore, MD 21202 Form 13F File Number: 28-596 The institutional investment manager filing this report and the person by whom it is signed hereby represent that the person signing the report is authorized to submit it, that all information contained herein is true, correct and complete, and that it is understood that all required items, statements, schedules, lists, and tables, are considered integral parts of this form. Person Signing this Report on Behalf of Reporting Manager: Name: Christine M. Sloan Title: Assistant Treasurer Phone: (410) 752-5900 Signature, Place, and Date of Signing: /s/ Christine M. Sloan Baltimore, MD April 20, 2012 [Signature] [City, State] [Date] Report Type (Check only one.): [X] 13F HOLDINGS REPORT. (Check here if all holdings of this reporting manager are reported in this report.) [ ] 13F NOTICE. (Check here if no holdings reported are in this report, and all holdings are reported by other reporting manager(s).) [ ] 13F COMBINATION REPORT. (Check here if a portion of the holdings for this reporting manager are reported in this report and a portion are reported by other reporting manager(s).) Form 13F SUMMARY PAGE Report Summary: Number of Other Included Managers: 0 Form 13F Information Table Entry Total: 51 Form 13F Information Table Value Total: $727,514 (in thousands) List of Other Included Managers: Provide a numbered list of the name (s) and Form 13F file number(s) of all institutional investment managers with respect to which this report is filed, other than the manager filing this report. NONE COLUMN 1 COLUMN 2 COLUMN 3 COLUMN 4 COLUMN 5 COLUMN 6 COLUMN 7 COLUMN 8 NAME OF ISSUER TITLE CUSIP VALUE SHRS OR SH/ PUT/ INVSTMT OTHER VOTING AUTHORITY OF CLASS (x $1000) PRN AMT PRN CALL DISCRETN MANAGER SOLE SHARED NONE AIR PRODUCTS & CHEMICALS, INC. COM 009158106 9,180 100,000 SH SOLE 100,000 ANADARKO PETROLEUM CORP. COM 032511107 21,544 275,000 SH SOLE 275,000 APACHE CORP. COM 037411105 14,062 140,000 SH SOLE 140,000 BAKER HUGHES, INC. COM 057224107 2,516 60,000 SH SOLE 60,000 CF INDUSTRIES HOLDINGS, INC. COM 125269100 15,355 84,069 SH SOLE 84,069 CHEVRON CORP. COM 166764100 92,226 860,000 SH SOLE 860,000 CLIFFS NATURAL RESOURCES INC. COM 18683K101 9,835 142,000 SH SOLE 142,000 CONOCOPHILLIPS COM 20825C104 26,604 350,000 SH SOLE 350,000 DEVON ENERGY CORP. COM 25179M103 9,601 135,000 SH SOLE 135,000 DOW CHEMICAL CO. COM 260543103 19,052 550,000 SH SOLE 550,000 ENERGEN CORP. COM 29265N108 8,601 175,000 SH SOLE 175,000 EOG RESOURCES, INC. COM 26875P101 12,221 110,000 SH SOLE 110,000 EQT CORP. COM 26884L109 6,749 140,000 SH SOLE 140,000 EXXON MOBIL CORP. COM 30231G102 117,817 1,358,430 SH SOLE 1,358,430 FMC CORP. COM 302491303 13,762 130,000 SH SOLE 130,000 FOREST OIL CORP. COM 346091705 2,424 200,000 SH SOLE 200,000 FREEPORT-MCMORAN COPPER & GOLD COM 35671D857 18,525 487,000 SH SOLE 487,000 HALLIBURTON CO. COM 406216101 14,189 427,500 SH SOLE 427,500 HESS CORP. COM 42809H107 13,264 225,000 SH SOLE 225,000 KINDER MORGAN INC. COM 49456B101 9,663 250,000 SH SOLE 250,000 LYONDELLBASELL INDUSTRIES N.V. SHS-A N53745100 3,274 75,000 SH SOLE 75,000 MARATHON OIL CORP. COM 565849106 5,548 175,000 SH SOLE 175,000 MARATHON PETROLEUM CORP. COM 56585A102 8,238 190,000 SH SOLE 190,000 MDU RESOURCES GROUP, INC. COM 552690109 4,724 211,000 SH SOLE 211,000 MOLYCORP, INC. COM 608753109 3,038 89,800 SH SOLE 89,800 NABORS INDUSTRIES, LTD SHS G6359F103 2,081 119,000 SH SOLE 119,000 NATIONAL FUEL GAS CO. COM 636180101 4,812 100,000 SH SOLE 100,000 NATIONAL OILWELL VARCO COM 637071101 19,867 250,000 SH SOLE 250,000 NEW JERSEY RESOURCES COM 646025106 12,480 280,000 SH SOLE 280,000 NEWFIELD EXPLORATION COM 651290108 2,774 80,000 SH SOLE 80,000 NOBLE ENERGY INC. COM 655044105 18,578 190,000 SH SOLE 190,000 NORTHEAST UTILITIES COM 664397106 1,373 37,000 SH SOLE 37,000 OASIS PETROLEUM, INC. COM 674215108 4,625 150,000 SH SOLE 150,000 OCCIDENTAL PETROLEUM CORP. COM 674599105 34,283 360,000 SH SOLE 360,000 OIL STATES INTERNATIONAL, INC. COM 678026105 10,928 140,000 SH SOLE 140,000 PEABODY ENERGY CORP. COM 704549104 5,935 204,940 SH SOLE 204,940 PIONEER NATURAL RESOURCES CO. COM 723787107 8,369 75,000 SH SOLE 75,000 POTASH CORP OF SASKATCHEWAN COM 73755L107 10,966 240,000 SH SOLE 240,000 PRAXAIR, INC. COM 74005P104 17,196 150,000 SH SOLE 150,000 QEP RESOURCES, INC. COM 74733V100 5,795 190,000 SH SOLE 190,000 QUESTAR CORP. COM 748356102 3,010 156,300 SH SOLE 156,300 ROYAL DUTCH SHELL SPONSORED ADR A 780259206 12,783 182,273 SH SOLE 182,273 SCHLUMBERGER LTD COM 806857108 40,210 575,000 SH SOLE 575,000 SEADRILL LTD. SHS G7945E105 7,502 200,003 SH SOLE 200,003 SOUTHWESTERN ENERGY CO. COM 845467109 1,683 55,000 SH SOLE 55,000 SPECTRA ENERGY CORP. COM 847560109 6,588 208,812 SH SOLE 208,812 TECK RESOURCES LTD. CL B 878742204 7,132 200,000 SH SOLE 200,000 TRANSOCEAN LTD. REG SHS H8817H100 5,470 100,000 SH SOLE 100,000 WEATHERFORD INT'L. LTD REG H27013103 6,036 400,000 SH SOLE 400,000 WILLIAMS COMPANIES, INC. COM 969457100 12,324 400,000 SH SOLE 400,000 WPX ENERGY, INC. COM 98212B103 2,702 150,000 SH SOLE 150,000 727,514