Aaron, Henry J. Why is welfare so hard to reform? A staff paper by Henry J. Aaron. - Washington, Brookings Institution [1973] - viii, 71 p. illus. 23 cm. - Studies in social economics . Includes bibliographical references. ISBN: 0815700199 (pbk) Source: $1.95 LCCN: 72013543 Subjects--Topical Terms: Public welfare--United States. LC Class. No.: HV 95 / .A595