au.\*:("BRADBURY JC")
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FLUORITE-ZINC-LEAD DEPOSITS OF THE ILLINOIS-KENTUCKY MINING DISTRICT.GROGAN RM; BRADBURY JC.1968; ORE.DEPOSITS.OF.THE.UNITED.STATES.1933-1967.GRATON-SALES.AIME.NEW-YOR; 1968, VOL. 1, P. 370 A 399Miscellaneous
ORIGIN OF THE STRATIFORM FLUORITE DEPOSITS OF SOUTHERN ILLINOIS.GROGAN RM; BRADBURY JC.1967; ECON. GEOL., MONOGR; USA; 1967, NUM. 0003, P. 40 A 51Miscellaneous
