TY  - BOOK
AU  - Donald Alexander Johansen
TI  - Plant embryology : Embryogeny of the spermatophyta
U1  - 581.33 
PY  - 1950///
CY  - Mass
PB  - Chronica Botanica Comany Publishers
N1  - Donald Alexander Johansen: Plant embryology : Embryogeny of the spermatophyta.  Mass.  Chronica Botanica Comany Publishers, 1950.--(581.33JOH)
ER  -