Smith, Victor C. and Clarke, Katherine. Science Along the Way, Science Under the Sun, Science Around the Clock; Smith, Victor C., and Henderson, Barbara, Science Across the Land, Science Through the Seasons, and Science Beneath the Skies. Chicago: J: B. Lippincott, Company, 1956. 128 P., 160 P., 160 P., 224 P., 352 P., and 352 P