00490nam a22001697a 4500 BD-DhUL 20170417190927.0 170417b1968 xxu||||| |||| 00| 0 eng d BD-DhUL 551.5 UNW World Meteorological Organization WMO Bulletin, October 1968 : Vol. XVII, No.2 / New York : United Nations, 1968 (171-234) p. : 24 cm. ill. ; Earth science periodicals ddc REF 183951 183951