SUBJECT
Rice
351
Study and teaching
336
History
303
Study and teaching (Secondary)
299
Education
293
English language
286
Mathematical models
246
Economic conditions
209
Politics and government
202
Attitudes
194
Mathematics
185
Study and teaching (Elementary)
185
Academic achievement
176
Economic aspects
163
Evaluation
157
Students
157
Teachers
154
Social conditions
153
Diseases and pests
134
Science
134
Teaching
134
School management and organization
132
Management
126
High school students
120
Agriculture
118
Social aspects
114
Aids and devices
113
Psychological aspects
113
Testing
108
Purification
106
Feeding and feeds
104
Analysis
103
Social sciences
102
Training of
100
Universities and colleges
99
Foreign relations
95
Research
95
Philippines
94
Nutrition
92
Rating of
91
Employment
90
Soils
90
Children
88
Special education
88
Administration
87
History and criticism
85
Planning
85
Sewage
82
Women
82
Community development
79
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