Where I can find Biscuit, Cookie and Cracker Process and Recipes book 1st Edition by Mr. Iain Davidson?
https://www.biscuitpeople.com/product/Biscuit-Cookie-and-Cracker-Process-and-Recipes
There is a Biscuit and Cracker Manufacturer association (BCMA) correspondence course that was written collectively from cross industry experts in the biscuit field. I think this two volume book which covers ingredients, formulas, processing and packaging will have everything you are looking for . I believe the American Institute of Baking in Manhattan, Kansas is now in charge of this allied group and can get you started to locate the books.