This book is a awesome piece of military memorabilia, from the secretary of defense in Washington. This book was produced for servicemen going overseas to learn about the cultures and customs of the country they are deployed to.
There is no printed date within this book, or ISBN. My best guess is that the book is from the 1950s/60s.
It also has the markings DOD PAM 2-20 DA pam 20-183/NAVPERS 92398/AFP 34-3-5/NAVMC 2529
The book is in generally good condition.