TY  - BOOK
AU  - Adanza, Estela G.
TI  - Research methods: principles and applications 
SN  - 971-23-1787-0
U1  - Fil. 001.4 A221 1995 
PY  - 1995///
CY  - Manila : 
PB  - Rex Book Store, 
KW  - Research - Methods
ER  -