Methods and techniques of research. /
Sanchez, Custodiosa A.
Methods and techniques of research. / Custodio A. Sanchez. - Manila : Rex Bookstore, c1998. - xi, 263 p.
9712323013
Methods and techniques of research. / Custodio A. Sanchez. - Manila : Rex Bookstore, c1998. - xi, 263 p.
9712323013