8.6 Pattern. Illustrations from Diagram - The Instrument of Thought by Keith Albarn and Jenny Miall Smith, published by Thames and Hudson 1977.
The co-authors have joint copyright with the publisher to the images from Diagram - The Instrument of Thought, reproduced here.

8_6_1 8_6_10 8_6_11 8_6_12 8_6_13 8_6_14
8_6_1.jpg 8_6_10.jpg 8_6_11.jpg 8_6_12.jpg 8_6_13.jpg 8_6_14.jpg
8_6_15 8_6_16 8_6_2 8_6_3 8_6_4 8_6_5
8_6_15.jpg 8_6_16.jpg 8_6_2.jpg 8_6_3.jpg 8_6_4.jpg 8_6_5.jpg
8_6_6 8_6_7 8_6_8 8_6_9    
8_6_6.jpg 8_6_7.jpg 8_6_8.jpg 8_6_9.jpg