au.\*:("PERKUHN E")
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QUARTZITE RUBBLE AND BEAN-ORE CONGLOMERATE : A KEY HORIZON IN CAVE SEDIMENTS.SCHILLAT B; PERKUHN E; GOODMAN LR et al.1969; CAVES AND KARST, U.S.A; USA; 1969(4), VOL. 11, NUM. 0002, P. 9 A 16Miscellaneous
