TY  - BOOK
AU  - Tang,Loon Ching
TI  - Six sigma: advanced tools for black belts and master black belts 
SN  - 9780470025833
PY  - 2006///
CY  - Chichester, England
PB  - Wiley
KW  - Six sigma (Quality control standard)
KW  - Total quality management
ER  -