TY  - BOOK
AU  - La Putt,Juny Pilapil
TI  - Higher surveying: instructional manual 
U1  - 526.9 
PY  - 1986///
CY  - Baguio City
PB  - Baguio Research & Publishing Center
KW  - Surveying
N1  - 500-599
ER  -