Shows mean low annual temperature of land and water. "Edges of icosa triangles equal to: 63⁰26ʹ ..." Accompanied by sheet of text: The dymaxion airocean world Fuller projective-transformation ; Fluid geography : a primer for the airocean world / Buckminster Fuller. ([1] leaf : ill. ; 56 x 87 cm.) "U.S. Pat. 2,393,676." Historic Maps copy lacks sheet of text.