H. Westhoff, Natuurlijk geboorteregelen in de twintigste eeuw. De ontwikkeling van de periodieke onthouding door de Nederlandse arts J. N. J. Smulders in de jaren dertig

License

Authors who publish with this journal agree to the following terms:

a) Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution 4.0 International (CC BY 4.0) that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.

b) Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.

c) Authors are permitted to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process.

Authors are explicitly encouraged to deposit their published article in their institutional repository.