Language: English
Published by The Science Teacher, Vol. 39 no. 1, 1972
Pamphlet. Condition: Collectible; Very Good. Prompt Shipment, shipped in Boxes, Tracking PROVIDEDOffprint. Reprinted from The Science Teacher Vol. 39 no. 1, 1972. First separate edition. Offprint. Original wrappers.*. First edition.