Appel, Alfred. Signs of life / Alfred Appel, Jr. - 1st ed. - New York : Knopf : Distributed by Random House, 1983. - 201 p., [1] p. of plates : ill. (some col.) ; 24 cm. ISBN: 0394507738 Subjects--Topical Terms: Photography, Artistic. LC Class. No.: NR642 / .A66 1983 TR642 / .A66 1983 Dewey Class. No.: 770