TY  - BOOK
AU  - Dolbear,Samuel H.
AU  - Bowles,Oliver
ED  - American Institute of Mining and Metallurgical Engineers. 
TI  - Industrial Minerals And Rocks : Nonmetallics Other Than Fuels
U1  - 553 IND 22
PY  - 1949///
CY  - New York
PB  - American Institute of Mining and Metallurgical Engineers
KW  - Mineralogy
KW  - Rocks
N1  - Includes bibliographical references and indexs ( p.: 1111 - 1156 )
ER  -