TY  - BOOK
AU  - Ducoff Louis J
TI  - "Human resources of central America, Panama and Mexico, 1950-1980, in relation to some aspects of economic development"
T2  - "United Nations , Economic Commission for Latin America"
U1  - "Y:50aX:77.750j.77.N80<--N50, K0/UN" 
PY  - 1960///
CY  - New
PB  - York United Nations Publication    
ER  -