It is therefore divided into lang pesticides pest categories using the element toxic residues and chemical composition are as follows (the aromatic BREW, thawi 2543)
So he divided the removal Lang pests into various categories are important. The composition according to the chemical composition of the residues and below (multiply hom, 2543).
Therefore, divided into various types of pesticides herbicides Lang that matters. Using the elements according to the toxic residues and the chemical elements as follows (TV, perfume maker 2543).