SUBJECT
Economic aspects
969
Study and teaching (Secondary)
686
Tourism
572
Study and teaching
521
Education
487
Design and construction
486
Study and teaching (Elementary)
391
Evaluation
384
Systems analysis
355
History
354
English language
344
Attitudes
332
Psychological aspects
323
Mathematics
314
Academic achievement
299
Teaching
296
Economic conditions
292
Mathematical models
292
Management
289
Aids and devices
278
Philippines
265
Participatory monitoring and evaluation (Project management)
257
Testing
257
Quality control
250
Rice
250
Production engineering
248
Students
248
Employment
247
Social aspects
234
High school students
232
Science
205
Nutrition
201
Factories
199
History and criticism
189
Purification
188
Women
187
Advertising
186
Social sciences
186
Social conditions
179
College students
178
Sports
178
Finance
174
Information resources management
173
Training of
173
Study and teaching (Higher)
172
Children
171
Designs and plans
171
Analysis
168
System analysis
167
Music
165
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