Ptolemy

30 books

136 pages paperback

missing duration info audio 2020

540 pages paperback

nonfiction mathematics

1085 pages hardcover 1952

1085 pages hardcover 1952

nonfiction classics science challenging informative medium-paced

192 pages paperback

nonfiction history science medium-paced

missing page info 2015

medium-paced

614 pages paperback 2015

452 pages paperback 1965

450 pages digital 1957