
LESSON VI.-PART 1: INFLUENCE OF INTERNAL AGENTS ON THE SURFACE OF THE EARTH. EARTHQUAKES.
7 Des 202420min

GLOSSARY -D-L
7 Des 202433min

LESSON X. –PART 1. CLASSIFICATION OF FORMATIONS.
7 Des 202415min

GLOSSARY -A-C
7 Des 202432min

LESSON VIII. –PART 1.EXPLANATION OF VARIOUS PHENOMENA. HEAT, DEPOSITS, AND FOSSILS.
7 Des 202432min

LESSON IV. SECONDARY FORMATION. SIXTH GEOLOGICAL EPOCH.
7 Des 202417min

LESSON III. –PART 1: THIRD GEOLOGICAL EPOCH
7 Des 202423min

LESSON II. ORGANIC REMAINS. FIRST GEOLOGICAL EPOCH. SECOND GEOLOGICAL EPOCH.
7 Des 202434min


















