An introduction to the computer language Pascal, which makes use of structured programming, the ways in which programs can be written in Pascal and the tools that make the programs understandable. Includes a glossary of terms.
Investigates the causes and disastrous effects of drought, giving the history of some of the severest droughts on record in the United States and elsewhere.
Describes the origin of dinosaurs, their characteristics, and their eventual disappearance. Also discusses the discovery and investigation of dinosaur fossils and other kinds of reptiles that lived during the age of dinosaurs.