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1,120
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1,005
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980
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517
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389
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337
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311
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301
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300
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298
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275
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270
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253
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246
Chemistry
211
Quantum theory
200
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196
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187
Computer programming
178
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176
Philosophie
174
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172
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170
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166
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156
Chemistry, Organic
153
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153
Mathematical statistics
153
Ecology
152
Methodology
151
Behavior
148
Probabilities
144
Geometry
136
Climatic changes
135
Genetics
135
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134
physiology
133
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125
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125
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124
Moral and ethical aspects
123
Algebra
117
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117
Physique
115
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114
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113
Astronomy
111
Congresses
109
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106
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105
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