1975b
The following is a reference to a book published by Sabberton Publications in 1975. It will be included on the author’s website www.aspden.org in PDF format in due course.
GRAVITATION
This book is a monograph comprising 78 pages. It is an account, updated to the year 1975, of Dr. Aspden’s theory of gravitation, which is one of the key subjects of these web pages.
