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The impact of the pine bark beetle on recreational values
White, Gregory Kiely, (1977)
An economic analysis of wildlife institutions
Lueck, Dean, (1987)
Open space and urban sprawl : the effects of zoning and forest conservation regulations in Maryland
Lichtenberg, Erik, (2011)
Agriculture in Tunisia : organization, production, and trade
Holm, Henrietta M., (1964)
Agriculture in Northern Africa
Warren, Cline J., (1965)
Algeria's agricultural economy in brief
Santmyer, Carolee, (1965)