KU Leuven (11)
Royal Belgian Institute for Natural Sciences (1)
Royal Museum for Central Africa (1)
book (12)
Dutch (11)
Undetermined (1)
1954 (1)
1950 (1)
1948 (1)
1947 (1)
1944 (1)
1936 (1)
1934 (1)
1932 (1)
1930 (1)
1922 (1)
1921 (1)
1909 (1)
Choose an application