TY  - BOOK
AU  - Bossard J H S
TI  - Social change and social problems
U1  - 303.4 
PY  - 1938///
CY  - New york
PB  - Harper
KW  - Income
KW  - Physiology
KW  - Public health
KW  - Social change
KW  - Social problems
ER  -