TY - GEN AU - Habermann,H M AU - Sekulow,D B TI - Development and aging in Helianthus annuus L. effects of the biological milieu of the apical meristem on patterns of development SN - 0017-4793 PY - 1973///0423 KW - Aging KW - Environment KW - Helianthus KW - growth & development N1 - Publication Type: Journal Article ER -