TY  - BOOK
AU  - Helmstadter, G C 
TI  - Research  Concepts In Human Behavior:  Education, Pshchology, Sociology
PY  - 1970///
CY  - New York
PB  - Appleton - Century - Crofts, 
KW  - Education-- Research  Concepts In Human Behavior -- Pshchology
N1  - General
ER  -