Van Nostrand?s scientific encyclopedia; aeronautics, astronomy, biochemistry, botany, chemical engineering, chemistry, civil engineering, computer technology, electrical engineering, electronics, geology, guided missiles, mathematics, mechanical engineering, medicine, metallurgy, meteorology, mineralogy, navigation, nuclear science and engineering, photoelectronics, photography, physics, planetary exploration, radio and television, rocketry, space travel, statistics, zoology. (Van Nostrand Reinhold, 1968)