TY  - BOOK
AU  - Lefond,Stanley J.
ED  - American Institute of Mining, Metallurgical, and Petroleum Engineers
TI  -  Industrial Minerals And Rocks : Nonmetallics Other Than Fuels
U1  - 553 19
PY  - 1975///
CY  - New York
PB  - Society of Mining Engineers
KW  - Industrial minerals
KW  - Rocks
KW  - Mineralogy
N1  - Includes bibliographical references and indexs (p.: 1307 - 1360)
ER  -