QUANTITATIVE INFRARED MULTICOMPONENT DETERMINATION OF MINERALS OCCURING IN COAL.ESTEP PA; KOVACH JJ; KARR C JR et al.1968; ANAL. CHEM.; USA; 1968(2), VOL. 40, NUM. 0002, P. 358 A 363Miscellaneous

FORBESITE - A MIXTURE OF COBALTOAN ANNABERGITE AND ARSENOLITE.ESTEP PA; MROSE ME; LARSON RR et al.1976; CANAD. MINERALOGIST; CANADA; DA. 1976; VOL. 14; NO 4; PP. 414-421; ABS. FR.; BIBL. 14 REF.; 4 ILL.Article

CRYSTALLIZED NICKEL PORPHYRIN FROM THE GREEN RIVER FORMATION, UTAH.PABST A; ESTEP PA; DWORNIK EJ et al.1975; GEOL. SOC. AMER., ABSTR. PROGRAMS; U.S.A.; 1975, VOL. 7, NUM. 0007, P. 1221 A 1222Miscellaneous