Rinto.
If you can read Japanese have a look into the Model Technix Books 1& 2.
Book 2 has a very large and good article on mold-making, mold-design(VERY important), casting, etc.
Not sure about the book you are inquiring though.
Local books, etc are generally 100% sure to refer to local materials, etc that are locally available. While overseas books will recommend materials available to the author and those that he has experiences with.
IME most of those "secret" books refer to products locally available to the author and once that HE gets the best results with, might be wrong on this book.
HTH.