TY  - BOOK
AU  - Francis, Wilfrid,
TI  - Coal: its formation and composition 
AV  - TN800 .F7
U1  - 553.2 18
PY  - 1961///
CY  - London
PB  - E. Arnold
KW  - Coal
KW  - Paleobotany
KW  - Carvao (Geologia)
KW  - larpcal
N1  - Includes bibliographical references and index
ER  -