Παραπομπή APA

Hans M Gregersen. (1990). FAO forestry paper N.96: Planning and managing forestry research: guidelines for managers. Rome: FAO.

Παραπομπή Chicago Style

Hans M Gregersen. FAO Forestry Paper N.96: Planning and Managing Forestry Research: Guidelines for Managers. Rome: FAO, 1990.

Παραπομπή MLA

Hans M Gregersen. FAO Forestry Paper N.96: Planning and Managing Forestry Research: Guidelines for Managers. Rome: FAO, 1990.

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