Mot so ket qua dieu tra tai nan tau thuyen nghe ca Vietnam tu nam 1980-1989 (The investigation of Vietnamiese fishery versel accident situations from 1980-1989)
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Mot so ket qua dieu tra tai nan tau thuyen nghe ca Vietnam tu nam 1980-1989 (The investigation of Vietnamiese fishery versel accident situations from 1980-1989)