17B
551.072
See also:
↑ 551.072 geological survey → 912 ≈ `17B `21A
912 ≈ `17B `21A
`17B
`21A
SciGator: explore University of Pavia libraries... — <http://scigator.unipv.it/indexe.php> : 2017.02.14 - 2024.11.12 - « <http://www-dimat.unipv.it/biblio/dewey.php> : 2015.06.18 - 2017