1. Elementary Science Study (ESS), McGraw-Hill Book Co., Manchester MO, 1974.
2. Science, A Process Approach (SAPA), Xerox Educational Services, Carlstadt, N.J., 1977.
3. Introductory Physical Science (IPS), Prentice-Hall Book Co., Englewood Cliffs, N.J., 1974.
4. Intermediate Science Curriculum Study (ISCS), Silyer-Burdett Co., Morristown, N.J., 1978.
5. Chemical Education Materials Study (CHEMS), W.H. Freeman Co., San Francisco. Revised editions also available from Houghton-Mifflin Publ. Co., Boston; D.C. Heath Publ. Co., Boston, and Prentice-Hall Book Co., Englewood Cliffs, N.J.