Is this amazon.com or is this wolfdog.org?
Free advertising for breeders to sell their books, isn't that called spamming?
Here's a reference, just my thoughts on this book, I purchased the Dutch version a few years ago:
compilation of text and wordings one will find at any Google search on "wolfdog" on the internet. Imho this site has more information on wolfdogs and is of more value.
But probably a nice to have for wolfdog owners, no more, no less.