Hamaker, Hendrik Gerard (1872-1948)
type: Person
birth date: 1872
death date: 1948
description: psycholoog
family name: Hamaker
given name: Hendrik Gerard
main entity of page: https://data.bibliotheken.nl/.well-known/genid/52b47aceb1f37a7ab00764a72b8ab5bf
name: Hendrik Gerard Hamaker