From Malthus to Mars: How to Live, Lead, and Learn in an Exponential WorldNicolai Chen Nielsen, Lars Tvede1
Gallantry in Action: Airmen Awarded the Distinguished Flying Cross and Two Bars 1918-1955Norman Franks2
Retribution: The Soviet Reconquest of Central Ukraine, 1943–44: The Soviet Reconquest of Central Ukraine, 1943-44Prit Buttar4.3
The Contact Paradox: Challenging our Assumptions in the Search for Extraterrestrial IntelligenceKeith Cooper4.3