00545pamaa2200169 4500 0000028322 20100506090000.0 100506 eng BF441 LU 2008 Lu Ping Yan The trenchant mind : a personal guide to sharper and clearer thinking Dr. Lu Ping Yan. Selangor: Venton Publishing, 2008. x, 361p: ill.; 24 cm. Critical thinking Thought and thinking Problem solving www.ventongpublishing.com