This book may no longer be available in print.
				
			The techniques described in this booklet represent a first step toward low-technology environmental analysis. Six tests are described - soil pH, soil texture, percolation, dissolved minerals, sodium in water, and coliform bacteria.
31 pages, tables
Publication Details
- Publisher: Codel Environment and Development Program, and Office of Private and Voluntary Cooperation, U.S. AID
 - Dewey Decimal: 631.4
 - ECHO Library: 631.4 COD