Soil Erosion and Population Problems in South-East Nigeria: Discussion

Autor: Steel, R. W., Raeburn, C., Dixey, F., Masefield, G. B., Jones, G. I., Stamp, L. D., Grove, A. T.
Zdroj: The Geographical Journal, 1951 Sep 01. 117(3), 304-306.
Databáze: JSTOR Journals