The Electronic Map Room: Version 1.0 September 1997 Colorado River Basin, Version 1.0, September 1997 ERIM International Inc. - [Version 1.0, September 1997] , Computer Programs - USA ERIM International Inc. 1997 - 1 computer optical disc 4 3/4 in. Title on booklet cover Summary on booklet cover System requirement : on booklet cover Subjects--Topical Terms: Map Libraries--Electronic