PDF(209 KB)
青少年妊娠危害程度的数学模型研究
Dai Meijing; et al. (Section of Child and Adolescent Health,faculty of Preventive Medicine,Nanjing Railway Madical College,Nanjing )
Chinese Journal of School Doctor ›› 1996, Vol. 10 ›› Issue (3) : 161-163.
PDF(209 KB)
PDF(209 KB)
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