TY  - BOOK
AU  - Ellison,J Howard
TI  - Asparagus yield as related to plant vigor, earliness and sex
T2  - American Society for Horticultural science. Proceedings
PY  - 1960///
CY  - College Park - EEUU
PB  - 
KW  - Botanica
KW  - Esparragos
ER  -