C92, D83, D91, H41
C71; C83; C92; D91
J16, C78, C91
I20, D10
Making; J13 - Fertility • Family Planning • Child Care • Children • Youth; I20 – Education and Research Institutions - General
C91 Laboratory, Individual Behavior; C92 Laboratory, Group Behavior;
D10, I20, C93, Q01, Q53, O10
C92, D63, D83
I20
C92, D71