Vegetation changes on the Manti-La Sal National Forest : a photographic study using comparative photographs from 1902-1992.

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Jen-Sal journal.

Mode of access: Internet.

Düyûnu Umumiye-i Osmaniye İdaresinin 1318 senesine müsadif yirmi birinci sene-i maliyesi sal-i hesabı.

Mode of access: Internet.