The free enterprise system
By: Keith G. Lumsden : under the auspices of Behavioral Research Laboratories, Palo Alto, Calif.
Contributors: Behavioral Research Laboratories, Palo Alto, Calif.
Series: The American economics series -- bk. 1
Publisher: McGraw-Hill
Published: 1963
Place of publication: New York
Language: eng
Number of pages: 138
Subjects: Economics -- Programmed instruction.
Notes: A Behavioral Research Laboratories programmed text.