20D
551.3
See also:
↑ 551.3 surface processes, rock fall, landslides → 624.151 631.4 ≈ `20D `32E
624.151 631.4 ≈ `20D `32E
`20D
`32E
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