TY  - BOOK
AU  - Willis,James F
AU  - Primack,Martín L,colab
TI  - Explorations in economics
SN  - 0395245249
U1  - 330 
PY  - 1977///
CY  - Boston, Mass.
PB  - Hougton Mifflin
KW  - ECONOMIA
N1  - Incluye: Instructor's manual. Boston, 1977. ix, 174 p. ISBN: 0395245257 -- Study guide. Individual explorations in economie. Boston, 1977. 261 p. ISBN 0395247578; Instructor's manual. Boston, 1977. ix, 174 p. ISBN: 0395245257 -- Study guide. Individual explorations in economie. Boston, 1977. 261 p. ISBN 0395247578
ER  -