TY  - BOOK
AU  - Chamberlain,Charles Joseph
TI  - Gymnosperms: : structure and evolution 
U1  - 585 
PY  - 1986/// [Reprint 1998]
CY  - New delhi
PB  - CBS Publishers & Distributers
KW  - Gymnosperms
N1  - Bibliography: p. 446-480
ER  -