Fuzz Acid and Flowers has been revised 2004. It is available through Amazon.co.uk.
This is the most complete review and identification of US Garage, Psych, Prog, Hard Rock, Folk Rock, Country Rock, and just plain Rock circa 1964 thru 1975, it does not deal with neo pysch or psych revival bands that came later.
You will be turned onto many bands, this is INDISPENSIBLE for fans and collectors.
British Rock is covered by Tapestry Of Delights revised May 2006.
Joynson does cover Hard/Heavy Rock dismissively so you may also want to Check out Martin Popoff's Collector's Guide To Heavy Metal Volume 1: The Seventies, and cross reference.