1. Effects of long-range transboundary air pollution
Author: /.United Nations. Economic Commission for Europe (Geneva)
Library: National Library and Archives of Islamic Republic of Iran (Tehran)
Subject:
2. Engineering equipment for foundries :
Author: organized by the United Nations Economic Commission for Europe, Geneva, 28 November-2 December 1977
Library: Center and Library of Islamic Studies in European Languages (Qom)
Subject: Foundries-- Equipment and supplies, Congresses
Classification :
TS237
.
S45
1977
