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Contributor
- Biswas, Asit K. 17
- Biswas, Margaret R. 14
- Chow, Ven Te, 1919- 6
- Csallany, Sandor C. 6
- Grossman, David 6
- Krizek, Raymond J. 6
- Preul, Herbert C. 6
- Shemuʼeli, Avshalom 6
- Zeevi, K. 6
- United States. Forest Service 3
- Amiran, David H. K., 1910- 2
- Baumann, Duane D. 2
- Dworkin, Daniel M. 2
- Wilson, Andrew W. (Andrew Wilkins) 2
- Abrash, Merritt 1
- Aldridge, Alexandra 1
- American Water Works Association 1
- Bakish, Robert A. 1
- Bond, Carl E. 1
- Bond, Lenora 1