TY  - BOOK
AU  - Lumsden,Keith G.
AU  - Attiyeh,Richard
AU  - Bach,George Leland
TI  - Microeconomics: a programmed book 
U1  - 330.077 21
PY  - 1966///]
CY  - Englewood Cliffs, N. J.
PB  - Prentice-Hall
KW  - Economics
KW  - Programmed instruction
ER  -