au.\*:("OLTMAN RE")
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RECONNAISSANCE INVESTIGATIONS OF THE DISCHARGE AND WATER QUALITY OF THE AMAZON RIVER.OLTMAN RE.1968; GEOL. SURV. U.S.A., CIRC.; USA; 1968, NUM. 0552, P. 1 A 16Miscellaneous
RESEARCH UNDER P.L. 88-379 IN QUALITY ASPECTS OF WATER.OLTMAN RE.1966; GROUND WAT.; USA; 1966(4), VOL. 4, NUM. 0002, P. 5 A 10Miscellaneous
