Rob Duffy Profile Topics Started Replies Created Engagements Favourites Search topics: Topics Engaged In Viewing 2 topics - 1 through 2 (of 2 total) Topic Voices Posts Last Post Books for sale to benefit the BAA Started by: Dr Richard John McKim in: For Sale / Wants / Giveaway 5 9 3 weeks ago Dr Paul Leyland Overhead DSLR photography Started by: Rob Duffy in: Photometry 9 10 4 months, 3 weeks ago Rob Duffy Viewing 2 topics - 1 through 2 (of 2 total)