Narcosis at extreme depths
and narcosis during ascent - A new theory published for the first time
The guide to 20 meters
A complete manual for the 2nd level of freediving
The guide for the first 10 meters
A complete manual for the 1st Level of free diving (Chinese edition)
The guide for the first 10 meters
A complete manual for the 1st Level of free diving
The equipment
A complete manual for the 3 levels of freediving
The story of Stathis Hatzis
And the history of sponge fishing free dives in Greece
