Vol 21, No 2 (1999)

Table of Contents

Articles

Nguyen Dong Anh, Nguyen Duc Tinh
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65-74
Nguyen Van Dao
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75-88
Pham Tien Dat, Nguyen Hoa Thinh
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89-98
Ha Ngoc Hien, Nguyen Van Diep, Duong Ngoc Hai, Nguyen Van Canh
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99-115
Pham Thi Toan
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116-128