Classical Sci-Fi Novels About Lost Civilizations: Boxed Set

This boxed-set includes 7 classical science fiction novels about lost civilizations:
THE LOST WORLD By SIR ARTHUR CONAN DOYLE
THE MOON POOL By A. MERRITT
AT THE EARTH'S CORE By EDGAR RICE
BURROUGHS
KING SOLOMON'S MINES by H. RIDER HAGGARD
THE METAL MONSTER By A. MERRITT
THE LAND THAT TIME FORGOT By EDGAR RICE BURROUGHS
A JOURNEY TO THE CENTRE OF THE EARTH By JULES VERNE