Primary mathematics. 2A / Primary Mathematics Project Team, project director, Dr Koh Tek Hong ; team members, Chee Kum Hoong, Hector ; Liang Hin Hoon ; Lim Eng Tann ; Lim Hui Cheng, Rosalind ; Ng Hwee Wan ; Ng Siew Lee ; Thong Chee Hing.
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Primary mathematics. 2A / Primary Mathematics Project Team, project director, Dr Koh Tek Hong ; team members, Chee Kum Hoong, Hector ; Liang Hin Hoon ; Lim Eng Tann ; Lim Hui Cheng, Rosalind ; Ng Hwee Wan ; Ng Siew Lee ; Thong Chee Hing.
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Kho, Tek Hong. project director. http://viaf.org/viaf/131154739916952992146.