Izvestii︠a︡.
Nauki o zemle.

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Item Link Original Source
Limited (search only)   v.18 1965 Cornell University
Limited (search only)   v.19 1966 Cornell University
Limited (search only)   v.20 1967 Cornell University
Limited (search only)   v.21 1968 Cornell University
Limited (search only)   v.22 1969 Cornell University
Limited (search only)   v.23 1970 Cornell University