Perhaps you should try some spelling variations:
"foreword historical biogeography / foreword historical biogeography" » "foreword historical geography / foreword historical geography", "foreword editorial biogeography / foreword editorial biogeography"
"foreword historical demography / foreword historical demography" » "foreword historical geography / foreword historical geography", "foreword editorial demography / foreword editorial demography"

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"foreword historical biogeography / foreword historical biogeography\") OR (\"foreword historical demography / foreword historical demography\"))".
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