Kết quả tìm kiếm

1

Rubber production in the Amazon Valley, by William L. Schurz, commercial attaché, and O.D. Hargis, special agent, of the Department of Commerce, and C.F. Marbut, chief, Division of Soil Survey, and C.B. Manifold, soil surveyor, of the Department of Agriculture.

Rubber production in the Amazon Valley, by William L. Schurz, commercial attaché, and O.D. Hargis, special agent, of the Department of Commerce, and C.F. Marbut, chief, Division of Soil Survey, and C.B. Manifold, soil surveyor, of the Department of Agriculture.

Bằng Schurz, William Lytle, 1886-1962.
Được phát hành 1925

Sách

2

Rubber regulation and the Malayan plantation industry /

Rubber regulation and the Malayan plantation industry /

Bằng Lewis, Harrison, 1905-
Được phát hành 1935

Sách

3

Rubber industry of the United States, 1839-1939 /

Rubber industry of the United States, 1839-1939 /

Bằng Barker, Preston Wallace, 1896-
Được phát hành 1939

Sách