TY  - BOOK
AU  - Johansen Donald Alexander
TI  - Plant embryology:embryogeny of the spermatophyta
T2  - New Series of Plant Science Books; 24
U1  - I9B, J0;1     CS 
PY  - 1950///
CY  - Waltham
PB  - Chronica Botanica        
KW  - Botany
N1  - Includes references; Glossary 295-298p
ER  -