Grupo Ujarrás, Estudios Sociales. MEC Costa Rica.

Grupo Zapandí, Matemáticas. MEC Costa Rica.

Grupo Ujarrás, Español.

Pellucidar is a fictional Hollow Earth milieu invented by Edgar Rice Burroughs for a series of action adventure stories. The stories initially involve the adventures of mining...

This is the fourth of Burroughs Tarzan novels. Alexis Paulvitch, a henchman of Tarzans now-deceased enemy, Nikolas Rokoff, survived his encounter with Tarzan in the third novel...

This book follows Tarzan and the Jewels of Opar chronologically. The action is set during World War I. While away from his plantation home in East Africa, invading German troops...

In the previous novel, during the early days of World War I, Tarzan discovered that his wife Jane was not killed in a fire set by German troops, but was in fact alive. In this...

Warlord of Mars by Edgar Rice Burroughs was first published in 1913. It was the third book in an eleven part series known as the Barsoom Chronicles which relate to a sequence of...

This is the first book in the Pellucidar series. Pellucidar is a fictional Hollow Earth milieu invented by Edgar Rice Burroughs for a series of action adventure stories. The...

Published in 1920, Thuvia, Maid of Mars is the fourth book in the Barsoom series and concentrates on Carthoris, the son of infamous John Carter, and Thuvia, the princess of...