... hda ddi vdi ba nudc: Ba Lan, Hungary va Viet Nam. 3. Timg cudng mdi quan he hgp tac kinh le giiTa cac nha khoa hoc, cac vien nshien ciru ciia cdc nudc Ba Lan, Hungary va ... cdc ban Hungary, Ba Lan sc do Vict Nam ehju trdch nhiem. Ve mdy bay do cdc nudc tu chi trd. Mdi nudc cir 3-5 ngudi tbam gia I Idi thdo. + Moi nudc chuan bj 3 cbii dc: - Kbiing hodng kinh ... giai doan chuyen ddi d Ba Lan \a Hungary. 2. Rin ra nhung bai hpc kinh nghiem, klui>en nghi chinh sach trong vice phat hu\ nhirng lac ddng lich cue, ban chl cdc tac dpng lieu...