Design of underground installations in rock; space layouts and excavation methods.

Mode of access: Internet.

Classification of barley varieties grown in the United States and Canada in 1958 /

"Supersedes Technical bulletin no. 907, Classification of barley varieties grown in the United States and Canada in 1945."

Workers in subjects pertaining to agriculture in state agricultural colleges and experiment stations, 1931-1932 /

Cover title.

Refrigeration in the handling, processing, and storing of milk and milk products /

Contribution from Bureau of Agricultural Engineering.

Workers in subjects pertaining to agriculture in state agricultural colleges and experiment stations, 1932-1933 /

Cover title.

Workers in subjects pertaining to agriculture in state agricultural colleges and experiment stations, 1933-34 /

Includes index.

Workers in subjects pertaining to agriculture in state agricultural colleges and experiment stations, 1934-35 /

Includes index.

Workers in subjects pertaining to agriculture in state agricultural colleges and experiment stations, 1935-36 /

Includes index.

Peat land in the Pacific coast states in relation to land and water resources /

Caption title.

Workers in subjects pertaining to agriculture in land-grant colleges and experiment stations.

Mode of access: Internet.

Workers in subjects pertaining to agriculture in land-grant colleges and experiment stations, 1937-38 /

Includes index.

Knots in second-growth pine and the desirability of pruning /

"June 1938."

Farm building surveys in Wisconsin, Kansas, Georgia, and Illinois /

"June 1938."

Workers in subjects pertaining to agriculture in land-grant colleges and experiment stations, 1938-39 /

"April 1939."

Workers in subjects pertaining to agriculture in land-grant colleges and experiment stations, 1939-40 /

Cover title.