Browsing by Author "Walla, James A."
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Item Diseases and related problems of evergreens(North Dakota State University, 1990) Stack, Robert W.; Walla, James A.; Lamey, H. ArthurItem Insect and Disease Management Guide for Woody Plants in North Dakota(North Dakota State University, 2005) Zeleznik, Joseph D.; Walla, James A.; Knodel, Janet J. (Janet Jean), 1958-