Soils of the eastern United States and their use--
Subtitle: XVII. The Porters loam and Porters black loam.
By: By Jay A. Bonsteel ...
Series: United States. Dept. of Agriculture. Bureau of Soils. Circular -- no. 39
Publisher: Govt. print. off.
Published: 1911
Place of publication: Washington
Subjects: Soils -- United States.
Other titles: Porters loam.; Porters black loam.