Construction and maintenance of earth roads.
Series: Washington (State). State College, Pullman. Dept. of Extension. Bulletin -- Ser. I, no. 20. April, 1916.; Extension bulletin (State College of Washington. Extension Service) -- 20.
Publisher: Washington State College
Published: 1916
Place of publication: Pullman, Wash
Language: eng
Number of pages: 35
Subjects: Roads -- Design and construction; Roads, Earth