GEMS/Water data summary.
By: prepared under the sponsorship of the United Nations Environment Programme ... [et al.].
Contributors: Global Environmental Monitoring System.; WHO Collaborating Centre for Surface and Groundwater Quality.; Canada Centre for Inland Waters.; United Nations. Environment Programme.
Publisher: WHO Collaborating Centre for Surface and Groundwater Quality, Canada Centre for Inland Waters
Published: 1990
Place of publication: Burlington, Ont
Language: eng
Notes: At head of cover: GEMS: Global Environmental Monitoring System.