Young People's Science Encyclopedia.
Edited by the Staff of National College of Education, Evanston, Ill.
- Chicago : Childrens Press, Inc., 1966.
- Volume : illus. ; 26 cm.
Vol. 20 (1964, p. 11-171) Vol. 1 (1966, p. 13-97, A-AN) Vol. 2 (1966, p. 107-197, AN-AZ) Vol. 3 (1966, p. 207-297, BA-BR) Vol. 4 (1966, p. 307-397, BR-CL) Vol. 5 (1966, p. 407-497, CL-DI) Vol. 6 (1966, p. 507-597, DI-EM) Vol. 7 (1966, p. 607-697, EM-FL) Vol. 8 (1966, p. 707-797, FL-GR) Vol. 9 (1966, p. 807-897, GR-IN) Vol. 10 (1966, p. 907-997, IN-MA) Vol. 11 (1966, p. 1007-1097, MA-MO) Vol. 12 (1966, p. 1107-1197, MO-OI) Vol. 13 (1966, p. 1207-1297, OI-PI) Vol. 14 (1966, p. 1307-1397, PI-RA) Vol. 15 (1966, p. 1407-1497, RA-SA) Vol. 16 (1966, p. 1507-1597, SA-SO) Vol. 17 (1966, p. 1607-1697, SP-SU) Vol. 18 (1966, p. 1707-1797, SU-VE) Vol. 19 (1964, p. 1807-1896, VE-ZY)