00383nam a2200133Ia 450000100060000000800410000602000180004704000130006508200150007824500800009326000580017330000110023154600070024214171140402s9999    xx            000 0 und d  a92-3-102101-x  cPK-LaUMT  a 306bCON-  aConventions and recommendations of Unesco concerning the protection of �.  aNairobi:bUnited Nations Environment Programme,c1985  a239 p.  aEN