International trade
Subtitle: a Behavioral Research Laboratories programmed text
By: Keith G. Lumsden
Contributors: Behavioral Research Laboratories
Series: The American economics series -- bk. 6
Publisher: Behavioral Research Laboratories
Published: 1965
Place of publication: Palo Alto, Calif
Language: eng
Number of pages: 187
Subjects: Economics; Programmed instruction; Textbooks
Notes: High School.