Preliminary studies for the "Philosophical investigations"
Subtitle: generally known as the Blue and Brown books
By: by Ludwig Wittgenstein.
Contributors: Wittgenstein, Ludwig, 1889-1951.
Publisher: Harper & Row
Published: 1965
Place of publication: New York
Language: eng
Number of pages: 192
Other titles: Blue and Brown books.
Notes: "Harper torchbooks"

Includes index.