000
00305nam a2200133Ia 4500
008
160316s1950 xxu||||| |||| 00| 0 eng d
020
_a
100
_a
Donald Alexander Johansen
245
_a
Plant Embryology
250
_a
1st
260
_a
U. S. A.
_b
WALTHAM, MASS
_c
1950
300
_a
305
700
_a
_a
999
_c
36045
_d
36045