Collaboration behaviour of Berlin life science researchers in the last two decades of the twentieth century as reflected in the science citation index Frank Havemann
 Artikel Jurnal
Dick, Steven J., author
The biological universe: the twentieth-century extraterrestrial life debate and the limits of science
Cambridge University Press, 1996
 Buku Teks
SCI Science Citation Index 1980 annual : volume 14, SCI Journal Citation Reports : a bibliometric analysis of science journals in the ISI data base
Institute fo Scientific Information, 1981
 Buku Referensi
SCI Science Citation Index 1980 annual : part 1 citaion index A-Coat
Institute fo Scientific Information, 1981
 Buku Referensi
SCI Science Citation Index 1980 annual : part 3 citaion index Gree-Kuwa
Institute fo Scientific Information, 1981
 Buku Referensi
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