B. K. (Nat’l Water Quality Lab, Burlington, ON, Canada) Afghan & Alfred S.Y. Chau 
Anal Of Pest In Water Anal Nitrogen Cont Pest [PDF ebook] 

First Published in 1982, this set offers a comprehensive guide into the process of analysing water for pesticides. Carefully compiled and filled with a vast repertoire of notes, diagrams, and references this book serves as a useful reference for students of toxicology and other practitioners in their respective fields.