ISBN-13: 9780367143749 / Angielski / Twarda / 2019 / 268 str.
ISBN-13: 9780367143749 / Angielski / Twarda / 2019 / 268 str.
Originally published in 1918, this book is a primer of the principles of peace and the author argues that the only effective method of providing against future wars is a covenant for mutual assistance.