TY  - BOOK
AU  - Basopo,Norah
AU  - NUST.
TI  - Effects of pesticides on esterase activity of two species of freshwater snails helisoma duryi and lymnaea natalensis
PY  - 2007///
CY  - Bulawayo
PB  - Natioanl University of Science and Technology
KW  - Pesticides
KW  - Freshwater snails
KW  - Water. Aquatic biology
N1  - Includes bibliographical references; Thesis(PhD)---NUST,2007
ER  -