00663nam a2200157Ia 4500 190328s9999||||xx |||||||||||||| ||und|| NITIL NITIL 21st 333.91 U58L United Nations. Economic Commission for Europe Long-term planning of water management proceedings of the seminar on long-term planning of water management, Zlatni Piasatzi (Bulgaria)17-22 May 1976 New York United Nations 1976 3v. V.p ECE/Water/15 Water quality-Management; Water resources development; Water conservation; Water resources development-Environmental aspects BKS 15627 15627 0 0 DDC 0 0 NITIL NITIL 2019-04-02 0 333.91 U58L 98776 2019-04-02 00:00:00 2019-04-02 BKS 0 0 DDC 0 0 NITIL NITIL 2019-04-02 0 333.91 U58L 98777 2019-04-02 00:00:00 2019-04-02 BKS 0 0 DDC 0 0 NITIL NITIL 2019-04-02 0 333.91 U58L 98778 2019-04-02 00:00:00 2019-04-02 BKS