International Geological Congress,, 23, Tertiary-quaternary boundary : Report of the twenty-third session - Czechoslovakia, 1968 / proceedings of section 10 [of] XXIII International Geological Congress

Tertiary-quaternary boundary : Report of the twenty-third session - Czechoslovakia, 1968 / proceedings of section 10 [of] XXIII International Geological Congress . - Prague : Academia, 1968 . - 88 p. : il. 24 cm
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