n 
OPTRONICS INTERNATIONAL INC. — USA/ 
GRAPHIC POLAR 
Fredrikinkatu 48 A, 00100 Helsinki 10, Finland 
HAAG-STREIT AG 
Hess-Strasse 27, CH-Liebefeld/Switzerland 
H. DELL FOSTER COMPANY 
P.O. Box 32581, San Antonio, Texas 78216, USA 
HIMEX INSTRUMENTS, H. HIERSEMANN AB 
Box 22114, 10422 Stockholm 22, Sweden 
INSTRONICS LTD 
171 Neil Street, Stittsville, Ontario, Canada KOA 3GO 
INTERNATIONAL IMAGING SYSTEMS 
510 Logue Avenue, Mountain View, 
California 94043, USA 
KELSH INSTRUMENT DIVISION/ 
DANKO ARLINGTON INC. 
4800 East Wabash Ave., Baltimore, Md. 21215, USA 
KERN & CO. AG 
Schachenallee, CH-5001 Aarau, Switzerland 
KEUFFEL & ESSER CO. 
20 Whippany Road, Morristown N.J., USA 
KIMOTO LTD., SWITZERLAND 
Schwamendingenstr. 5, 8050 Zürich, Switzerland 
KONGSBERG DATA SYSTEMS, DIVISION OF 
A/S KONGSBERG VAPENFABRIKK 
Box 25, N-3601 Kongsberg, Norway 
LOGETRONICS AG, ZURICH 
Fórrlibuckstr. 110, CH-8005 Zürich, Switzerland 
MANN AVIATION SALES LTD 
Fairoaks Airport, Chobham Woking, 
Surrey GU24 8HU, U.K. 
MATRA 
91 Av. V.Hugo, 92503 Rueil-Malmaison, France 
OFFICINE GALILEO S.P.A. 
Via Carlo Bini 44, 50134 Firenze, Italy 
OTTICO MECCANICA ITALIANA S.P.A. 
81 Via della Vasca Navale, 00146 Roma, Italy 
RUDOLF + AUGUST ROST 
Márzstrasse 7, A-1151 Wien, Austria 
SCHWEIZERISCHE SCHULE FÜR PHOTO- 
GRAMMETRIE-OPERATEURE 
Rosenbergstr. 16, 9000 St. Gallen, Switzerland 
SIEMENS-ALBIS AG 
Albisriederstrasse 245, CH-8047 Zürich, 
Switzerland 
SOILWATER CONSULTANTS 
Itálahdenkatu 2, 00210 Helsinki 21, Finland 
SWISSAIR PHOTO 4 VERMESSUNGEN AG 
Obstgartenstr. 7, Postfach, 8035 Zürich, 
Switzerland 
TELLUROMETER (UK) LTD — A PLESSEY 
COMPANY 
c/o Rapier Design Associates, Lamb's Conduit 
Street, London WC 1N 3LJ, U.K. 
WILD HEERBRUGG AG 
9435 Heerbrugg, Switzerland 
VEB CARL ZEISS JENA 
Carl-Zeiss-Str. 1, DDR 69 Jena, German Democratic 
Republic 
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