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COMBINATORIAL PROBLEMS IN THE THEORY OF GRAPHS. III
Author(s) -
Gillian Ford,
G. E. Uhlenbeck
Publication year - 1956
Publication title -
proceedings of the national academy of sciences of the united states of america
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.011
H-Index - 771
eISSN - 1091-6490
pISSN - 0027-8424
DOI - 10.1073/pnas.42.8.529
Subject(s) - passerine , ecological niche , niche , biology , evolutionary biology , ecology , adaptive radiation , diversity (politics) , geography , phylogenetics , gene , genetics , sociology , anthropology , habitat

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