The thinking formula to arrive at the core.
Drawing a square. c.p.20
Drawing a square. c.p.21.
Drawing a square. c.p.24
Drawing a square. c.p.26
Drawing a square. c.p.27
Drawing a square. c.p.28
Drawing a square. c.p.39.
Drawing a square. c.p.56b.
Drawing a square. c.p.54a.plus
Drawing a square. c.p.64
Drawing a square. c.p.67
Drawing a square. c.p.83
