File:Twistor (book).jpg

Summary

{{Non-free use rationale

|Article = Twistor (book)

|Description = 1st edition

|Source = https://www.abebooks.co.uk/servlet/BookDetailsPL?bi=14782015741

|Portion = front cover

|Low_resolution = yes

|Purpose = to illustrate an article concerning the book in question

|Replaceability = no

|other_information =

}}