na INLIS000000000010527 Ind 0010-1118010527 Social change NORDSKOG, JOHN ERIC John Eric Nordskog New York Mc grow-Hill Book Company 1960 vii, 423 p.; 26 cm. vii, 423 p.; 26 cm. 301.15NORs Index p. 414-423 301.15 SOCIAL CHANGE 537/65