TY  - BOOK
AU  - Van Krevelen,D.W.
TI  - Coal: typology - Chemistry - Physics - constitution
U1  - 662.622 
PY  - 1961///
CY  - Amsterdam
PB  - Elesevier
KW  - Coal
KW  - Carbonization
KW  - Coal - weathering
KW  - Physical properties
N1  - Includes index; Includes bibliographical references
ER  -