Link to pdfs of Dr. Denos seed germination books.
These links to Dr Deno's "Seed Germination: Theory and Practice" and the two supplemental books are free downloads at the USDA National Agriculture Library online site. I know this book is out of print and nearly impossible to find. I hope this information is useful.
Title: Seed germination, theory and practice.
http://naldc.nal.usda.gov/naldc/download.xhtml?id=41278&content=PDF
https://naldc-legacy.nal.usda.gov/naldc/catalog.xhtml?id=41278&start=0&searchText=deno%2C+norman&searchField=Author&sortField=