Materia
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RESEARCH RESULTS
1
RESULTADOS DE INVESTIGACIÓN
1
RURAL ZONES
1
SCIENCE
1
SECONDARY
1
SECONDARY EDUCATION
9
SEX
1
SEXO
1
SISTEMAS DE ENSEÑANZA
4
SOCIAL CONDITIONS
1
SOCIAL STUDIES
4
SPANISH
STUDENTS
1
TEACHERS
2
TEACHING
1
TEACHING MATHEMATICS
1
TEACHING OF SCIENCES
7
TEACHING OF SOCIAL STUDIES
1
TEACHING SYSTEMS
4
TESTS
4
URBAN AREAS
1
WRITING
1
ZONAS RURALES
1
ZONAS URBANAS
1