The book listed as #234 in the Osprey Campaign series is Nomonhan 1939: The Bloody Soviet-Japanese Border War
The Japanese defeat convinced their high command to abandon "Hokushin-ron" (Northern Expansion into Siberia) in favor of "Nanshin-ron" (Southern Expansion towards the Pacific/US), directly leading to the attack on Pearl Harbor. Tactical Mismatch: Osprey Campaign 234 Pdf
How to access Osprey Campaign 234 PDF?
If you're interested in learning more about Osprey Campaign 234, I recommend searching online for the book's title and checking out Osprey Publishing's website for more information. The book listed as #234 in the Osprey