Ray D. William

发表

Whole Systems ActionGrams: A Diagramming Tool That Enhances Systemic Inquiry and Action

Ray D. William, R. D. William, 2002 .

Farmer/scientist focus sessions : a how-to guide

Helene Murray, Ray D. William, Larry Lev, 1993 .

1984 pest management guide for stone fruits in Oregon

Glenn C. Fisher, Ray D. William, Iain C. MacSwan, 1984 .

Herbicide Action on Purple and Yellow Nutsedge (Cyperus rotundus and C. esculentus)

Ray D. William, G. Crabtree, Welington Pereira, 1987, Weed Technology.