APA

Seil G. E., . (1946). The manufacture of refractories and information concerning their use in the iron and steel industry of western Germany. Brooklyn: Dep.of Commerce.

Chicago

Seil G E, . 1946. The manufacture of refractories and information concerning their use in the iron and steel industry of western Germany. Brooklyn: Dep.of Commerce.

Harvard

Seil G. E., . (1946). The manufacture of refractories and information concerning their use in the iron and steel industry of western Germany. Brooklyn: Dep.of Commerce.

MLA

Seil G E, . The manufacture of refractories and information concerning their use in the iron and steel industry of western Germany. Brooklyn: Dep.of Commerce. 1946.