Books by Thomas Helm
Total count: 18
The Sea Lark.A.A. Wyn1955-01-01
Treasure hunting around the world.Dodd, Mead1960-01-01
Shark!Unpredictable killer of the sea.Dodd, Mead1961-01-01
Monsters of the deep.Dodd, Mead1962-01-01
The EvergladesFlorida wonderland.Dodd, Mead1963-01-01
Dangerous sea creaturesa complete guide to hazardous marine lifeFunk & Wagnalls1976-01-01