Footfall - Mass Market Paperback By Larry Niven - VERY GOOD

Crashlander - Mass Market Paperback By Niven, Larry - GOOD

N-Space - Mass Market Paperback By Larry Niven - GOOD

Lucifer's Hammer - Mass Market Paperback By Niven, Larry - GOOD

Protector - Mass Market Paperback By Niven, Larry - VERY GOOD

Ringworld (A Del Rey book) - Mass Market Paperback By Niven, Larry - GOOD

Ringworld (A Del Rey book) - Mass Market Paperback By Niven, Larry - VERY GOOD

Footfall : A Novel Mass Market Paperbound Larry, Pournelle, Jerry