TY  - BOOK
AU  - Villegas, Bernardo M.
TI  - Managerial economics.
AV  - HB 171.5 .V52 1977 
PY  - 1977///
CY  - Manila
PB  - Sinag-Tala Pub., Inc.
KW  - Economics
N1  - Bibliography: p.410-416 Includes index
ER  -