TY  - BOOK
ED  - ACSM - ASPRS Annual Convention
TI  - Techical papers.Vol.1
T2  - Surveying
SN  - 0-944426-39-5
AV  - GY TA502.A47 Vol.1 
PY  - 1991///
CY  - Bethesda, MD : 
PB  - American Congress on Surveying and Mapping
KW  - Surveying
KW  - Geographical information systems
KW  - Congresses
N1  - Includes bibliographical references
ER  -