That Bisher book is fabulous. I would say it is the #1 historical book on the Far East at the time.
Others::
Vladivostok under red and white rule : Revolution and Counterrevolution in the Russian Far East, 1920-1922 by Canfield F. Smith. Only the later period, and only tangentially on the Japanese, but a good book.
The Japanese thrust into Siberia, 1918 by James William Morley. This is a political book and it stops at the decision to send a large army. Only for completists.
The Destruction of Nikolaevsk-On-Amur : An Episode in the Russian Civil War in the Far East, 1920 by A. Ya. Gutman, and Richard A. Pierce. Only one episode, but if you want to get a real feel for how the Japanese thought and behaved, then this is a must read.
The Siberian Intervention by John Albert White, is an old book (1950) and I can't remember it to be honest. My notes say it is mainly about the US, but since the US were mainly there to stop the Japanese it has to be about them a bit too.