ISBN-13: 9781138231412 / Angielski / Miękka / 2019 / 134 str.
ISBN-13: 9781138231412 / Angielski / Miękka / 2019 / 134 str.
Originally published in 1959, with some corrections in 1962, the author examines the common view at the time that dreams are mental activities or mental occurrences taking place during sleep.