TY  - BOOK
AU  - 	
AU  - Ricardo Asin [editor]
TI  - Spherical trigonometry
SN  - 9717730962
U1  - 516.244 Sp39 ©2002 
PY  - 2002///
CY  - Philippines 
PB  - Tru-Copy Publishing House Inc. 
N1  - COECS; Bachelor of Science in Civil Engineering
ER  -