What is Gravity? (Pageant of knowledge series) Fred M. King, George R. Otto
1962. No Edition Stated. 47 pages. Pictorial dust jacket with red lettering over brown cloth. Colour illustrations throughout. Clean pages with firm binding. Previous owner's inscription to front paste down. Mild wear and bumping to spine, board edges and corners. Unclipped dust jacket. Mild wear and tear to edges and corners. Minor tanning and soiling to DJ.