Brandes citation

[David Edwin Mead]

A Dutch author writing in 1927 cited, simply, "Brandes, Proefschrift".  I
assume this can be none other than Jan Lourens Andries Brandes, while
'Proefschrift' is Dutch for (Ph.D./doctoral) thesis.  But can anyone fill
me in on the fuller bibliographic citation, i.e. title and when and where
completed?  His thesis, at least in part, deals with sound change in
Indonesian languages, the then-called R-G-H Law, and the like.

--David Mead, Rice University