@{,
author = {https://digital.katalog.queersearch.org/s/katalog/item/39056, and https://digital.katalog.queersearch.org/s/katalog/item/40835,},
year = {1928},
title = {Empfängnisverhütung: Mittel und Methoden},
publisher = {https://digital.katalog.queersearch.org/s/katalog/item/43154}
}