Humphrey, C. (1929). Timber storage conditions in the eastern and southern states with reference to decay problems. United States Government Printing Office.
Chicago-viite (17. p.)Humphrey, C.J. Timber Storage Conditions in the Eastern and Southern States with Reference to Decay Problems. Washington: United States Government Printing Office, 1929.
MLA-viite (9. p.)Humphrey, C.J. Timber Storage Conditions in the Eastern and Southern States with Reference to Decay Problems. United States Government Printing Office, 1929.
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