United Nations Environment Programme / Industry and Environment Office. (1991). Tanneries and the Environment: -- A Technical Guide --. UNEP.
Чикаго маягийн жагсаалтUnited Nations Environment Programme / Industry and Environment Office. Tanneries and the Environment: -- A Technical Guide --. Paris: UNEP, 1991.
MLA ишлэлUnited Nations Environment Programme / Industry and Environment Office. Tanneries and the Environment: -- A Technical Guide --. UNEP, 1991.
Warning: These citations may not always be 100% accurate.