au.\*:("NIKIFOROV JU V")
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ON NIOBITE-TANTALITE FROM ALTAI.MAKAROCHKIN BA; NIKIFOROV JU V.1966; AKAD. NAUK S.S.S.R., SIB. OTD., GEOL. GEOFIZ ; SUN; 1966(12), NUM. 0012, P. 117 A 119Miscellaneous
