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Description: |
v, 309 pages : illustrations ; 28 cm |
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Bibliography Note: |
Includes bibliographical references. |
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Additional Physical Forms: |
Online version: Biology and conservation of northern forest owls. Fort Collins, Colo. : U.S. Dept. of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station, 1987 (OCoLC)988016995 |
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Series Added Entry: |
General technical report RM ; 142. |