Science-fiction Books Without Explicit Sexual Content

The Mote in God's Eye

Foundation and Earth

Unwind (Unwind #1)

I Have No Mouth and I Must Scream

Excession

The Lathe of Heaven

WWW

Proxy

Midnight Robber

Wherever Seeds May Fall

Perdido Street Station

Some Desperate Glory

The Beasts of Tarzan (Classic Ace SF, F-203)

After London

Moving Mars

The Weird

Octavia's Brood

Galactic Derelict

Drowned worlds

Childhood’s End

Invisible Planets

Out of the Silent Planet

Children of Dune

So long, and thanks for all the fish