Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Friendly but Scholarly

Bruce Grant's work is well-researched and extremely well-organized. It is easy to read and interspersed with anecdotes about his travels on Sakhalin island. The book includes some excellent photography. Grant's main thesis centers around the idea that the Nivkhi tribe of Sakhalin island experienced the Soviet era as a "roller coaster" of policy shifts culminating in a sense of "culturelessness." The book covers pre-Revolutionary times a little bit, and then documents the treatment of Nivkhi throughout the Soviet era. A recommended read for anyone studying Siberia during Stalinism or Soviet times.