Books by Johannes Bouma:
Books in the extended shelves:
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Bouma, Johannes: Viruses and septic tank effluent (Small Scale Waste Management Project ; College of Agricultural and Life Sciences, 1975), also by Dean Cliver, Kenneth M. Green, University of Wisconsin--Madison. Dept. of Agricultural Journalism, and University of Wisconsin--Madison. College of Agricultural and Life Sciences. Small Scale Waste Management Project (page images at HathiTrust)
Find more by Johannes Bouma at your library, or elsewhere.