GEOREF COVERAGE AND IMPROVEMENTS IN THE BIBLIOGRAPHY AND INDEX OF GEOLOGYMULVIHILL JG.1981; GEOSCIENCE INFORMATION SOCIETY. MEETING. 15/1980/ATLANTA GA; USA; FALLS CHURCH PA: GEOSCIENCE INFORMATION SOCIETY; DA. 1981; PP. 55-64Conference Paper

ADDITIONAL SEARCHES SUBMITTED BY THE AMERICAN GEOLOGICAL INSTITUTEMULVIHILL JG.1980; DATABASE; USA; DA. 1980; VOL. 3; NO 4; PP. 47-48Article

THE AMERICAN PETROLEUM INSTITUTE (API) DATA BASES : COMPARISON OF ON-LINE AND BATCH SEARCHINGBUNTROCK RE; MULVIHILL JG.sdIN : AM. SOC. INF. SCI. 3RD. MID-YEAR MEET. PROC. ON-LINE INF. RETR. SYST. STAND. ACT. AFFECT LIBR. INF. CENT.; JOHNSTOWN, PA. ; 1974; INDEPENDENCE, OHIO; FERRO CORP. TECH. CENT.; DA. S.D.; PP. (2P.); BIBL. 5REF.Conference Paper