The busy man's short course on Wallis tractor, tractor implements and Wallis threshers
By: Educational Department, J.I. Case Plow Works Company
Contributors: Tosdal, Harry R. (Harry Rudolph), 1889- former owner
Publisher: J.I. Case Plow Works Co.
Published: 19uu
Place of publication: Racine, Wisc
Language: eng
Subjects: Sales personnel; In-service training; Selling; Tractors
Other titles: J.I. Case Plow Works Co. educational course
Notes: Cover title.