The Online Books Page

Books by W. B. Bollen:

Books in the extended shelves:

• Bollen, W. B. (Walter Beno), 1896-: Effect of Zectran on microbial activity in a forest soil (U.S. Dept. of Agriculture, Forest Service, Pacific North West Forest and Range Experiment Station, 1970), also by David V. Sandberg and Or.) Pacific Northwest Forest and Range Experiment Station (Portland (page images at HathiTrust)
• Bollen, W. B. (Walter Beno), 1896-: Influence of endrin on soil microbial populations and their activity (Pacific Northwest Forest and Range Experiment Station, U.S. Dept. of Agriculture, 1971), also by C. M. Tu and Or.) Pacific Northwest Forest and Range Experiment Station (Portland (page images at HathiTrust)
• Bollen, W. B. (Walter Beno), 1896-: Influence of sitka alder on soil formation and microbiological succession on a landslide of alpine origin at Mount Rainier (U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station, 1969) (page images at HathiTrust)
• Bollen, W. B. (Walter Beno), 1896-: Properties of tree barks in relation to their agricultural utilization (U.S. Pacific Northwest Forest and Range Experiment Station, 1969) (page images at HathiTrust)
• Bollen, W. B. (Walter Beno), 1896-: Sour sawdust and bark : its origin, properties, and effect on plants (Pacific Northwest Forest and Range Experiment Station, U.S. Dept. of Agriculture, 1970), also by K. C. Lu and Or.) Pacific Northwest Forest and Range Experiment Station (Portland (page images at HathiTrust)

Find more by W. B. Bollen at your library, or elsewhere.