Structure and development of the sieve cell protoplast in leaf veins of Welwitschia.pdf  
Structure and development of the sieve cell protoplast in leaf veins of Welwitschia.pdf

Creator:   Evert, Ray. F; Bornman, Chris, H. ; Valere, Butler; Margaret,G. Gilliland Description:   Publications Publisher:   Springer-Verlag Date:   1973 Language:   en Subjects:   RAY F. Evert, ChrGis H. bornman, Valere Butler, and Margaret G. G. Gilliland