Method of proportioning concrete materials--screened and unscreened gravel
By: by R.W. Crum ...
Series: Bulletin; 60,; Engineering Experiment Station
Publisher: Iowa State College of Agriculture and Mechanic Arts
Published: 1921
Place of publication: Ames, Ia
Language: eng
Number of pages: 56
Subjects: Concrete.; Gravel.
Notes: At head of title: Iowa State College of Agriculture and Mechanic Arts. Official publication. Vol. XIX, no. 51. May 18, 1921.