TY  - BOOK
AU  - Mantell Leroy H.
AU  -  Sing Francis P.
TI  - Economics for business decision
SN  - 0070400539
U1  - X:71, L2 
PY  - 1972///
CY  - New York
PB  - McGraw Hill U. S. A.     
KW  - Microeconomics
ER  -