Techniques and hatchery procedures in induced spawning of the European common carp, Cyprinus carpio and the Chinese carps Ctenopharyngodon idella, Hypophthalmichthys molitrix and Aristichthys nobilis in Transkei
Observations on fish growth in polyculture during late summer and autumn in fish ponds at the Umtata Dam Fish Research Centre, Transkei Part I: The use of pig manure with and without pelleted fish feed
Observations on fish growth in polyculture during late summer and autumn in fish ponds at the Umtata Dam Fish Research Centre, Transkei Part II: The use of cattle manure with and without pelleted fish feed
Observations on fish growth in polyculture during late summer and autumn in fish ponds at the Umtats Dam Fish Research Centre, Transkei Part III: The use of chicken manure with and without pelleted fish feed