Hale, Nathan Cabot. Abstraction in art and nature a program of study for artists, teachers, and students. - New York Watson-Guptill [1972] - 301 p. illus. (part col.) 29 cm. Bibliography: p. [297] ISBN: 0823000494 LCCN: 70180163 Subjects--Topical Terms: Art, AbstractNatural history--Pictorial works.Nature Aesthetics LC Class. No.: N7432.5.A2 / H3 Dewey Class. No.: 701/.8