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geoloogia 1 geoloogiline ajaarvamine 1 kaevandusgeoloogia 1 kivisüsi 1 maagid 1 maavarad 1 maavarade geoloogia 1 more ...
1
by Wells, Roger C.
Published 1921
“...Geology and petroleum resources of northwestern Kern County California....”Published 1921
Book
2
by Sears, Julian D.
Published 1925
“...Geology and oil resources of the Puente Hills region, Southern California...”Published 1925
Book