BOOMSMA J./VERSEPUT DR. J., Verdinkend land. Illegale foto-documentatie.
GOTTSCHALK, M.K.E., Het Naardermeer en zijn omgeving historischg-geografisch bezien.
ANONYMOUS, Two riders in front of a palace
VERHOEVEN, J. T. A., Fens and Bogs in the Netherlands: Vegetation, History, Nutrient Dynamics and Conservation.
Roghman, Roelant (1627-1692) in Maerseveen
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