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551.23
23E
31G
See also:
↑ 23E mining geology. Geothermy ≈ 551.23 ↑ 31G geothermal energy ≈ 551.23
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