na YOGYA-02090000031833 20090227024625.0 ind 010-020900000031833 553.6 553.6 Mor G Q Morton, Paul K Geology and mineral resources of imperial county, California by Paul K. Morton Cet. 1 Sacramento California Division of Mines and Geology 1977 viii, 104 hlm ilus 28 cm Bibliografi : hlm. 99-104 Geologi Sumber mineralogi - Geologi YOPDYOG(B) 11-13-2006 1 a000019704