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Amino acids from the Late Precambrian Thule Group, Greenland

by Akiyama, Masahiko, Shimoyama, Akira, Ponnamperuma, Cyril
Published in Origins of Life (1982)

Amino acids in the Yamato carbonaceous chondrite from Antarctica

by Shimoyama, Akira, Ponnamperuma, Cyril, Yanai, Keizo
Published in Nature (1979)

Amino acids in a carbonaceous chondrite from Antarctica

by Kotra, R. K., Shimoyama, Akira, Ponnamperuma, Cyril, Hare, P. E.
Published in Journal of Molecular Evolution (1979)

Organic Analysis of the Antarctic Carbonaceous Chondrites

by Kotra, R. K., Shimoyama, Akira, Ponnamperuma, Cyril, Hare, P. E., Yanai, K.
Published 1981