Willard S & Johansen Carl A Robinson books & textbook
EFFECTS OF CONTROL CHEMICALS FOR DOUGLAS-FIR TUSSOCK MOTH ORGYIA PSEUDOTSUGATA (MCDONNOUGH) ON FOREST POLLINATION (LEPIDOPTERA: LYMANTRIIDAE)
Willard S & Johansen Carl A Robinson
Melanderia, Washington State Entomological Soc /1978T Paperback