MEDINA AND ORISKANY PRODUCTION ALONG THE SHORE OF LAKE ERIE, PIERCE FIELD, ERIE COUNTY, PENNSYLVANIA.KELLEY DR; MCGLADE WG.1969; PENNSYLVANIA TOPOGR. GEOL. SURV., BULL., M; USA; 1969, P. 1 A 38Miscellaneous

OIL AND GAS DEVELOPMENTS IN PENNSYLVANIA IN 1968.KELLEY DR; LYTLE WS; WAGNER WR et al.1969; PENNSYLVANIA TOPOGR. GEOL. SURV., PROGR. REP.; USA; 1969, NUM. 0177, P. 1 A 18Miscellaneous

THE PETROLEUM INDUSTRY AND THE FUTURE PETROLEUM PROVINCE IN PENNSYLVANIA, 1970.KELLEY DR; LYTLE WS; WAGNER WR et al.1970; PENNSYLVANIA TOPOGR. GEOL. SURV., BULL., M; USA; 1970, NUM. 0065, P. 1 A 39Miscellaneous

OIL AND GAS DEVELOPMENTS IN PENNSYLVANIA IN 1968 : OIL AND GAS INDUSTRY ACTIVITY BENEFIT OF WELL DATA AND BASIS OF STATISTICS.KELLEY DR; LYTLE WS; WAGNER WR et al.1969; PENNSYLVANIA TOPOGR. GEOL. SURV., PROGR. REP.; USA; 1969, NUM. 0177, P. 18 A 48Miscellaneous

OIL AND GAS DEVELOPMENTS IN PENNSYLVANIA IN 1965.LYTLE WS; GOTH JH JR; KELLEY DR et al.1966; COMMONW. PENNSYLVANIA, BUR. TOPOGR. GEOL. SURV., PROGRESS REP.; 1966, NUM. 0172, P. 1 A 66Miscellaneous