31/12/1969
Some numbers issued in revised editions.
Mode of access: Internet.
bib
http://hdl.handle.net/2027/uc1.ax0003238235
http://hdl.handle.net/2027/osu.32435022050975
http://hdl.handle.net/2027/uc1.b5175398
http://hdl.handle.net/2027/mdp.39015006903002
http://hdl.handle.net/2027/mdp.39015006903010
http://hdl.handle.net/2027/mdp.39015006903028
http://hdl.handle.net/2027/mdp.39015006903036
http://hdl.handle.net/2027/mdp.39015006905601
http://hdl.handle.net/2027/mdp.39015006905692
http://hdl.handle.net/2027/mdp.39015006905619
http://hdl.handle.net/2027/mdp.39015006905627
http://hdl.handle.net/2027/mdp.39015006905635
http://hdl.handle.net/2027/mdp.39015006905643
http://hdl.handle.net/2027/mdp.39015006905684
http://hdl.handle.net/2027/mdp.39015006905650
http://hdl.handle.net/2027/mdp.39015006905668
eng
Tucson, Ariz. : University of Arizona,
Bulletin - Arizona Bureau of Mines
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