TY  - BOOK
AU  - Stach E
AU  -  Chandra D
AU  -  Mackowsky M.-TH
AU  -  Taylor G H
AU  -  Teichmuller M
TI  - Stach's textbook of coal petrology
U1  - H35403, L5   TH 
PY  - 1975///
CY  - Berlin
PB  - Gebruder Borntraeger        
KW  - Coal petrology
N1  - Bibliographical references 389-407p
ER  -