Agriculture: Soil survey of the Delta Area, Utan/
A. T. Strahorn, D. S. Jennigs, Macy H. Laphem; United states departament of Agriculture
- Washington: Goverment printing offise, 1922
- 39p.: a-il.
- Foirteenth cecsusofthe United States taken inthe year 1920; Vol.5 .
Книга посвящена обследование почвы в районы дельты.