| AFRICAN REGIONAL AQUACULTURE CENTRE, PORT HARCOURT, NIGERIA | ARAC/87/WP/12(5) |
| CENTRE REGIONAL AFRICAIN D'AQUACULTURE, PORT HARCOURT, NIGERIA |
P. LOGANATHAN
Department of Crop and Soil Sciences
Rivers State University of Science
and Technology,
Port Harcourt
Lectures presented at ARAC for
the Senior Aquaculturists course
UNITED NATIONS DEVELOPMENT PROGRAMME
FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS
NIGERIAN INSTITUTE FOR OCEANOGRAPHY AND MARINE RESEARCH
PROJECT RAF/82/009
JUNE, 1987
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4. PHYSICAL PROPERTIES OF THE SOIL
5. CHEMICAL PROPERTIES OF SOIL
5.3. Origin of Charges in Soil and Ion Exchange