The infant earth.

By John G. Head

Before the dinosaurs.

By John G. Head

In the world of reptiles.

By John G. Head

When the Dinosaurs Ruled Before the Dinosaurs

By Bernard Robinson, John G. Head

Death of the Dinosaurs The Ages of the Earth

By Bernard Robinson, John G. Head

The Great Ice Age The Ages of Earth

By Bernard Robinson, John G. Head

Fairness in Taxation

By Lars Osberg, John G. Head

Before the dinosaurs

By John G. Head

A brother and sister travel back in time to the late Devonian period where they observe the first amphibians.

The infant earth

By John G. Head

As a brother and sister travel back in time to when the first living things were appearing on Earth, the reader learns about prehistoric life.

Before the dinosaurs

By John G. Head

A brother and sister travel back in time to the late Devonian period where they observe the first amphibians.