The Prohibition Era vol 3. (the road to repeal)
The Prohibition Era vol 1. (the dry crusade)
The dinosaur who lost his roar /
The Luck of Roaring Camp and other stories /
The Luck of roaring Camp and other Stories: cassette
Metamoderná éra. /
The modern era /
Golden era /
Twenty four preludes
Twenty Lectures on Thermodynamics /
American History: 115 - The Twenties
Capital in the twenty-first century /
The new era of management /
The cold war era /
The electronic era of publishing /
Materials of the Space Era /
Nová éra : podpora vedy a výzkumu.
ERA 21 : o architektuře víc! more on architecture!.
The new physics for the twenty-first century /
Novaja era v fizike /
The Prohibition Era vol 2. (the roaring twenties)