TY  - BOOK
AU  - Seward,A.C.
TI  - Plant life through the ages: a geological and botanical retrospect 
U1  - 561 23
PY  - 1933/// [1959]
CY  - Cambridge
PB  - University Press
KW  - Paleobotany
KW  - Geology
N1  - Bibliography and "Addenda": p. [545]-590
ER  -