00731nam a2200217Ia 4500 CTU_118622 210402s9999 xx 000 0 und d 34000 540 T527 Tuyển tập đề thi Olympic hoá học : 30/4 lần XII - 2006 Ban Tổ chức kì thi Hà Nội Giáo dục 2006 Tổng hợp tất cả các đề thi Olympic Hoá học năm 2006 của các Trường chuyên trên toàn Quốc Study and teahcing (secondary) Chemistry Hiếu Trung tâm Học liệu Trường Đại học Cần Thơ