Silbury 1969 by Richard J J Bridle is available from Amazon in these countries. Click on the links to buy.

The Americas

Brazil ebook

Canada paperback

Mexico ebook

USA ebook paperback

Europe

France ebook paperback

Germany ebook paperback

Italy ebook paperback

Netherlands ebook

Spain ebook paperback

United Kingdom ebook paperback

Asia & Oceania

Australia ebook

India ebook

Japan ebook paperback