Greenberg, Joanne. Of such small differences / Joanne Greenberg. - 1st ed. - New York : Holt, c1988. - 262 p. ; 22 cm. ISBN: 0805009027 : $18.95 LCCN: 88004424 LC Class. No.: PS 3557 .R3784O35 1988 / O35 1988 Dewey Class. No.: 813/.54