00476pamaa2200169 4500 0000023209 20060323090000.0 9810173628 540 KWA 1998 QD33 KWA 1998 KWAN SEET NGOH Chemistry for 'A' level : multiple choice questions Kwan Seet Ngoh and Ong Teng Sai. 2nd ed. Singapore: Federal Pub., 1998. 160p.: ill.; 26cm. Chemistry Ong Teng Sai