TY  - BOOK
AU  - Fettweis,Gunter B.
TI  - World coal resources: methods of assessment and results 
SN  - 0444997792
PY  - 1979///
CY  - Amsterdam
PB  - Elsevier Science
KW  - Coal
KW  - Reserves
N1  - Translation of Weltkohlenvorrate; Includes bibliographical references and index
ER  -