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International Thermal Instrument Co.
in Environmental Monitoring Systems
PO Box 309
Del Mar, California
92014
United States of America
Campbell Scientific Inc.
in Environmental Monitoring Systems
815 West 1800
Logan, Utah
84321-1784
United States of America
Terrascan Geophysics
in Environmental Monitoring Systems
4506 West 4th Ave.
Vancouver, British Columbia
Canada
Zaromb Research Corp.
in Environmental Monitoring Systems
9S 706 William Dr.
Burr Ridge, Illinois
60527
United States of America
Vibro-Acoustic Consultants
in Environmental Monitoring Systems
490 Post St.
San Francisco, California
94102
United States of America
ChemTrace
in Environmental Monitoring Systems
44050 Fremont Blvd
Fremont, California
94538
United States of America
Aerodyne Research, Inc.
in Environmental Monitoring Systems
45 Manning Rd
Billerica, Massachusetts
01821-3976
United States of America