TY  - SER
AU  - Heiser,Charles
TI  - The origin and development of the cultivated sunflower
KW  - Botanique
KW  - Flore
KW  - Helianthus annus
KW  - Utilisation
KW  - Domestication des plantes
KW  - Etats Unis
N1  - <Donation Engel>; bibliogr. p. 167
ER  -