Bronnen

Keppy, Herman. 2019. “De pillboxen van Ambon.” Moesson, maart 2019.
Keppy, Herman. 2019. “De pillboxen van Ambon.” Java Post (blog). April 2, 2019. https://javapost.nl/2019/04/02/de-pillboxen-van-ambon/.

Pillbox, mitrailleurnesten (AMB-06)
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