SUBJECT
Economic aspects
965
Study and teaching (Secondary)
664
Tourism
568
Study and teaching
505
Design and construction
484
Education
481
Evaluation
375
Study and teaching (Elementary)
371
Systems analysis
352
English language
341
Attitudes
331
Psychological aspects
321
Mathematics
313
Academic achievement
300
History
300
Mathematical models
293
Management
289
Economic conditions
286
Teaching
269
Testing
260
Philippines
254
Aids and devices
251
Quality control
250
Students
249
Production engineering
247
Rice
247
Employment
243
High school students
231
Participatory monitoring and evaluation (Project management)
229
Social aspects
225
Science
205
Factories
199
Nutrition
189
Purification
188
Advertising
184
Sports
182
College students
178
Social sciences
177
Finance
174
Training of
173
Women
173
Information resources management
172
Designs and plans
171
Social conditions
169
System analysis
167
History and criticism
166
Study and teaching (Higher)
165
Rating of
164
Children
160
Music
158
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