Aquatic invertebrates of South African Rivers
Gerber and M.J.M. Gabriel.
Dept of Water Affairs and Forestry.
The publication below is available from
R120-00 per copy
This publication is a must for any angler who wants
to tie flies
for imitative flyfishing for all species of fish.
The publication is extremely well produced, the pictures are good considering
how difficult it is to photograph these insects, some of which are tiny.