[On the concept of the probable length of life;  Parts 1 and 2].
D001695:Biology; D003710:Demography; D009026:Mortality; D011153:Population; D011154:Population Characteristics; D011157:Population Dynamics
Biological Characteristics; Biology; Demographic Factors; Mortality; Population; Population Dynamics
Asupra conceptului de durata probabila a vietii (I) and (II)