Perhaps you should try some spelling variations:
"Oxford ecological monographs / Oxford ecological monographs" » "Oxford ecological demography / Oxford ecological demography", "Oxford clinical monographs / Oxford clinical monographs", "Oxford ecological areography / Oxford ecological areography"
"oxford classical holographic / oxford classical holographic" » "oxford acoustical holographic / oxford acoustical holographic", "oxford classical phylogeographic / oxford classical phylogeographic", "oxford classical cryptographic / oxford classical cryptographic", "deformed classical holographic / deformed classical holographic"
oxford ecological » oxford economic, beyond ecological, world ecological

Try widening your search to All Fields.

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• If you are trying to use Boolean operators, they must be ALL CAPS: (("Oxford ecological monographs / Oxford ecological monographs") OR ("oxford classical holographic / oxford classical holographic")).
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