TY  - BOOK
AU  - Gielnik,S.J.
AU  - W. F. Gossling
TI  - Input, output, and marketing
AV  - HF5415.G5 
PY  - 1980///
CY  - London
PB  -  : Input-Output Publishing Company
KW  - Marketing,
KW  - Marketing research
N1  - Includes bibliographical references and index
ER  -