Scientific American June 1931

Available in PDF digital format for

$1.98

New Ideas - The Life Of Industry Shall We Reform Our Calendar?.. Man's Inseet Allies
June 1931 35c A Copy
Triangulation - Building The Backbone Of Accurate Map's

Title: Scientific American June 1931

Series: Scientific American

Item Number: SCIENTIFICAM193106

Johnny Tpoau - July 12, 2011

★★★★★

Great issue! Ignore all the naysayers.