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PANDE, Pete, HOLPP, Larry. (2005). WHAT IS SIX SIGMA . Yogyakarta: ANDI OFFSET.

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PANDE, Pete, HOLPP, Larry. WHAT IS SIX SIGMA. Yogyakarta: ANDI OFFSET, 2005. Text.

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PANDE, Pete, HOLPP, Larry. WHAT IS SIX SIGMA. Yogyakarta: ANDI OFFSET, 2005. Text.

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PANDE, Pete, HOLPP, Larry. WHAT IS SIX SIGMA. Yogyakarta: ANDI OFFSET, 2005. Print.