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151 - Problems of Soviet School Education - page 151 |
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152 - Problems of Soviet School Education - page 152 |
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153 - Problems of Soviet School Education - page 153 |
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154 - Problems of Soviet School Education - page 154 |
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155 - Problems of Soviet School Education - page 155 |
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156 - Problems of Soviet School Education - page 156 |
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157 - Problems of Soviet School Education - page 157 |
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158 - Problems of Soviet School Education - page 158 |
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159 - Problems of Soviet School Education - page 159 |
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160 - Problems of Soviet School Education - page 160 |