256 pages, tables
A study based on field survey data and on pertinent records, material, and reports
Publication Details
- Published: 1963
 - Publisher: Amer Institute of Crop Ecology
 - Dewey Decimal: 630.959
 - ECHO Library: 630.959 NUT
 
256 pages, tables
A study based on field survey data and on pertinent records, material, and reports