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  1. 1

    Shifting cultivation, fire, and pine forest in the Cordillera central, Luzon, Philippines by Kowal, Norman Edward

    Published 1966
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    Shifting cultivation, fire, and pine forest in the Cordillera central, Luzon, Philippines
  2. 2

    Shifting cultivation, fire, and pine forest in the Cordillera Central, Luzon by Kowal, Norman Edward

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    Shifting cultivation, fire, and pine forest in the Cordillera Central, Luzon

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