TY  - BOOK
AU  - Allin, Bushrod W
AU  - Brunck, Hermann
AU  - Goodrich, Carter
AU  - Parker, William N ed
AU  - Tryon, Frederick G
TI  - Migration and economic opportunity
CY  - Philadelphia
KW  - Economic opportunity
KW  - Economics
KW  - Manpower
KW  - Migration
KW  - Migration policy
ER  -