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Utgitt
| University Park, Pa. : The Pennsylvania State University Press , c1979
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Omfang
| 537 s. : ill., fig., tab., diagr.
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Opplysninger
| "Proceedings of a symposium conducted by the School of Forest Resources and the Institute for Research on Land and Water Resources, The Pennsylvania State University ...". - Har bibliografi.
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Emner
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ISBN
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