Instruct: Classify Amazon reviews into positive or negative sentiment
Query: If you want to inspect cow dung!

Many mushroom enthusiasts have done it. This book tells you how, beginning from how to collect dung specimens and incubate them to identifying the growing mushroom.There are no photos but the illustrations are pretty good and what they lack is compensated by descriptions and keys. I would recommend this book,( amongst other guides) for anyone serious about mushroom hunting.