Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Poor Guide to Alaska Rivers

I bought this book expecting to get a comprehensive guide to Alaska's rivers and found that it was a large let down. I am a life long Alaskan and the book is missing several rivers that are well known to boaters and easily accessible from the road system which is very important when choosing rivers to raft in Alaska since there isn't a large road system. The river descriptions are poor along with the directions on how to get to the put in's and take out's, several of the rivers in this book are missing put in's and take out's that are well known to anyone that has run these rivers.