TY  - BOOK
AU  - Johansen,Donald Alexander
TI  - Plant embryology: embryogeny of the spermatophyta
SN  - 8121100437
U1  - 581.3 22
PY  - 1950///]
CY  - Waltham, Mass.
PB  - Chronica Botanica Co.
KW  - Plant embryology
N1  - Includes bibliographies and index
ER  -