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141
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142
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143
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144
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145
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146Published 1975“...Energy and agriculture ;...”
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147
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148
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149
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150
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151Published 1970“...Energy and agriculture ;...”
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152Published 1978“...Energy and agriculture ;...”
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153
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154
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155
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156
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157Published 1980“...Energy and agriculture ;...”
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158
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159Published 1976“...Energy and agriculture ;...”
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160