P. A. H. van der Harst
Source: "P. A. H. van der Harst Bibliography." Author Wars, https://authorwars.com/authors/p-a-h-van-der-harst.html".
Source: "P. A. H. van der Harst Bibliography." Author Wars, https://authorwars.com/authors/p-a-h-van-der-harst.html".