au.\*:("KOVAL'CHUK GM")
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GENETIC RELATIONSHIP BETWEEN PETROGRAPHIC AND PALYNOLOGIC COMPOSITION OF COALS, EXEMPLIFIED BY COAL SEAM L3 IN THE KRASNOARMEYSKIY REGION OF THE DONETS BASIN.KOVAL'CHUK GM; UZIYUK VI.1973; DOKL. EARTH SCI. SECT.; USA; DU RUSSE: DOKL. AKAD. NAUK S.S.S.R., S.S.S.R. 1973; 212, NO 3, 693-696,1973, VOL. 212, P. 79 A 82Miscellaneous
