w h douma

W. H. Douma · J. H. Kok

28 sayfa · 1968

Science and civilization

W. H. Douma · Yayınevi bilinmiyor

117 sayfa · 1961

Family / Rural conditions / Families

W. H. Douma · L. J. Veen

128 sayfa · 1978

Marriage / Mate selection

W. H. Douma · Yayınevi bilinmiyor

54 sayfa · 1960

Readability (Literary style) / Agriculture / Periodicals

C. J. Weeda, W. H. Douma · Van Gorcum

255 sayfa · 1981

Marriage / Family / Families