I've listed a book on eBay entitled 'Glass in Czechoslovakia'. In this book the development of Czechoslovakian glass from the middle ages through to the 1950's is traced with text and photographs. This book was published in 1958 for the Universal and International Exhibition in Brussels. It has 68 pages with 88 photographs, mostly black and white. It was written by Karel Hettes and translated into English by Georgina A. Evans. The book was published in Prague by SNTL.
The eBay listing address is http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&rd=1&item=170575805721&ssPageName=STRK:MESE:IT
I'd say get 'Hi Sklo Lo Sklo' and 'Sklo Union Art Before Industry' first if you want books on Czechoslovakian glass, but that the book I'm listing would be an addition for the serious collector who has other books on Czech glass.