TY  - BOOK
AU  - Spain, P. L
TI  - A Report on the System of Radioprimaria in the State of San Luis Potosi, Mexico
U1  - 371.3 
PY  - 1973///
CY  - Washington
PB  - Information center on Instructional Technology Academy for Educational Development, 
KW  - Education
KW  - Methods of instruction and study
ER  -