TY  - BOOK
AU  - Pew, Weymoth D.
TI  - Growing head lettuce in Arizona
PY  - 1989/// ?]
CY  - Tucson, Arizona
PB  - University of Arizona. Cooperative Extensión Service
KW  - Lechuga
KW  - Arizona
KW  - Crecimiento
N1  - 53-397
ER  -