a| International Youth Federation for Environmental Studies and Conservation

a| Compendium on "Waste of natural resources".

a| [S.l] : b| IYF, c| 1972.

a| 23 p.

a| Engels

a| Brochure

b| AMSAB c| AMSAB j| MAD/642.01

u| https://hdl.handle.net/10796/493ABB62-840C-480C-A8FE-C3D6359F3715 3| Amsab-permalink

a| miscellanea