Thank you Hallmark for your helpful replies. An American distant cousin had been able to borrow the book I am looking for and he copied some pages for me. He had noticed that my g.g.grandfather, William Jackson was mentioned, as well as my g.grandfather, Joseph Young. I would really like to obtain a copy of the book, so that I can read it. It seems to be a very comprehensive work of scholarship.
I did notice the collection of gravestones in an earlier post, but have no idea if any of my Jackson ancestors are buried in the graveyard. They seem to have lived in Mulnagore, which is not very far from Carland church.
I will write to the minister of Carland church to ask if there are, by chance, some spare copies of the book. Since it was first published over 20 years ago, this seems unlikely.