TY  - BOOK
AU  - Y.mido , M.satake M.s Sethi , S.A.Iqbaal 
TI  - Chemicals in the Environment 
SN  - 81-7141-267-X 
PY  - 1995///
PB  - Discovery Publishing House 
N1  - The teaching of chemistry at the introductory stage becomes each day a more challenging task as the subject matter becomes more diverse and more complex
ER  -