Books by Delbert D. Hemphill
Commercial vegetable productio
Commercial vegetable production guides
Seedless table grapes for the
Seedless table grapes for the Willamette Valley
Trace Substances
Trace Substances
Overwintering onions and other
Overwintering onions and other alliums in the Willamette Valley
Overwintering cole crops and s
Overwintering cole crops and spinach in the Willamette Valley
North Willamette Agricultural
North Willamette Agricultural Experiment Station vegetable research - 1978