TY  - BOOK
AU  - Van Tassel,Roger C.
TI  - Economic essentials: a core approach 
AV  - HB171.5 .V29
U1  - 330 
PY  - 1969///
CY  - Boston
PB  - Houghton Mifflin
KW  - Economics
N1  - Includes bibliographical references
ER  -