00347nam a2200121Ia 4500008004100000082002600041245005700067260001400124300000800138490004000146600000900186650003000195140117s9999    xx            000 0 und d  a634.0.7(048.1) L9 1-6  aEconomic analysis of forestry projects; case studies  bFAOc1979  a3p.  aFAO forestry paper; No.17 sup. No.1  aRome  aEconomic analysisForestry