The Child's Conception of Movement and Speed
Jean Piaget
Making Sense of War: Strategy for the 21st Century
Alan Stephens
Word Frequencies in Written and Spoken English: Based on the ...
Geoffrey N. Leech & Paul Rayson & Andrew Wilson
Flow and the Foundations of Positive Psychology
Mihaly Csikszentmihalyi
A War Like No Other: How the Athenians and Spartans Fought the ...
Victor Davis Hanson
Who Goes There?
John W. Campbell