Principles of economics /
Castillo, Andres V.
Principles of economics / Andres V. Castillo. - Manila : University Book Supply, c1966.
Economics.
HB 172.5 .C33 1966
Principles of economics / Andres V. Castillo. - Manila : University Book Supply, c1966.
Economics.
HB 172.5 .C33 1966