4 0

Teacher's handbook of chemistry. 6 6 M.P. Singh. - - - 256 pages - - - - - . - . - 0 . - . - 0 .







5

















5







2 = =









2




2 --0------


6 --0-- 2 --------



0 2 --


--20------





--------20--


--------20--


----2

/ 2

R 540.71 / Si64t 20072

/

/