30093

The effect of nutrient rich water on the biological control of water hyacinth

C H Scholtz استاد راهنما

University of Pretoria etd

نامعلوم

M Inst Agrar )Sustainable Insect Management( )Zoology and Entomology(

0

2002

Aquatic weeds effect of water pollution on , Hyacinths effect of water pollution on , Aquatic weeds biological control South Africa

01

انگليسي