Beschreibung:

8°. Mit 41 Tafeln. 489 SS. Mod. Ln. (guter Erhaltungszustand).

Bemerkung:

Contents: "Alaska Experiment Stations. Hawaii Experiment Station. Porto Rico Experiment Station. The Association of American Agricultural Colleges and Experiment Stations. The agricultural experiment stations in the several States and Territories, with governing boards, station staffs, lines of work, equipment, income, and general outlook. Settlements along Yukon. Scope and results of the nutrition investigations of the Office of Experiment Stations" etc.