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17D
551.7
See also:
↑ 551.7 historical geology ≈ `17D `19B
`17D
`19B
SciGator: explore University of Pavia libraries... — <http://scigator.unipv.it/indexe.php> : 2017.02.14 - 2024.09.18 - « <http://www-dimat.unipv.it/biblio/dewey.php> : 2015.06.18 - 2017