TY  - BOOK
ED  - THE AMERICAN SOIETY OF CIVIL ENGINEERS
TI  - Journal of the Surveying and Mapping Division VOL. 93,1967-68
U1  - 624.105 
PY  - 1967///
CY  - NEW YORK
PB  - THE AMERICAN SOIETY OF CIVIL ENGINEERS
KW  - SURVEYING AND MAPPING
ER  -