000 00413nam a2200145Ia 4500
008 130225s9999 xx 000 0 und d
080 _a581.331
100 _aDe Boer-De Jeu, M.J
245 _aMegasporogenesis: a comparative study of the ultrastructural aspects of megaspor
260 _aWageningen
_c1978
300 _a128 p.
440 _aNo. 78-16; Netherlands Medede
901 _a164605
942 _cB
_2udc
999 _c11742
_d11742