WELCOME, Alinus:
Sorry, there is yet no .pdf (Adobe Acrobat) or otherwise any electronic version of Carol's book.
It is best if You are able to find some iodine tincture and test the foods which are in question. Usually, green is good and yellow dodgy but everything else is on a case-by-case test.
I don't know whether McCance and Widdowson's guide is the final word, but our experience within this forum is a bit more accurate and worth exploring with the search capability.
May You achieve much renewed HEALTH,
John
