TY  - BOOK
AU  - Chalapathi, R S.
TI  - Six sigma tool master : a practical guide to green belts and black belts
SN  - 8190274511
U1  - 658  CHA;1  R 
PY  - 2005///
CY  - Noida
PB  - Istitute of sigma learning
N1  - E-509
ER  -