I have been active training people in wilderness emergency care for some years now, and this is one of the books that I always recommend.
When a friend of mine went to live in Russia (in the Siberia area) I recommended that he take along a paramedic manual and this book. Both books served him well, but he referred to this book much more often.
Overall, for a person who is going to be in a medically isolated area and/or in an area where the general level of health knowledge is low, this is an absolutely outstanding book.
This company also published "Where There Is No Dentist" and "The Village Midwife." Both are excellent. They recently came out with another great book titled "Where Women Have No Doctor." I really like and respect the work these people do.