Close to Critical

Hal Clement

DelRey – Science Fiction

Used Paperback

Cover has wear mostly around the edges and corners. Inside cover is slightly tanned. Spine has no creasing, though price is marked with faded ink. Pages are clean no internal tears, marks, or creases.

Crisis on Tenebra

Shrouded in eternal gloom by its own thick atmosphere Tenebra was a hostile planet…a place of crushing gravity, 370-degree temperatures, a constantly shifting crust and giant drifting raindrops.

Unpromising – yet there was life, intelligent life on Tenebra. For more than 20 years, Earth scientists had studied the natives from an orbiting laboratory…and had even found a way to train and educate a few of them.

Then the unexpected happened! A young Earth girl and the son of a powerful, hot-tempered alien diplomat were marooned in a bathyscape, drifting toward the planet’s deadly surface.

Only the primitive Tenebrans could rescue them!

I-5