Try the aviation megastore, based at Schiphol airport
https://www.aviationmegastore.com/ca...rlands-15.html
A quick check gives two titles that might be of interest
De val van Java, Verslagen en Verdreven, de Marineluchtvaartdienst na de inval van Japan in Nederlands Indië in 1942 (Geromy 9789491197772)
Aircraft of the Netherlands East Indies Army Air Corps in Crisis and Wartimes February 1937 - June 1942 (Bataafsche Leeuw 9789067076852)
Not my area of interest so cannot comment on coverage
Generally I find Dutch books to be of better quality than an equivalent UK one, though that might be luck in the ones I have bought
If you know a bit of German, then Dutch is not that bad and sometimes is a bit closer to the English
The shop is good and does mail order
Martin