Lezer, L. A., author
L. A. Lezer, 1931
Buku Referensi
Geldern, I. Van, author
BIJ J. B. Wolters U. M., [date of publication not identified]
Buku Referensi
Gallas, K. R., author
J. B. Wolters, [date of publication not identified]
Buku Referensi
Herckenrath, C. R. C., author
J. B. Wolters U. M., [date of publication not identified]
Buku Referensi
Wageningen, J. Van, author
J. B. Wolters U. M., 1921
Buku Referensi