First Edition. 8vo, paged 2234-2239, illustrated; G+; green cover with black print, pencil notation top edge, slight peripheral tanning, bumped corners, creasing at right edge and corners throughout, creasing at lower left corner throughout; back cover has blue library stamp at top left; interior has slight spotting, clean text; "Reprinted from The Physical Review, Vol. 38, pp. 2234-2239, December 15, 1931"; "Papers from the Geophysical Laboratory, Carnegie Institution of Washington, No. 773."
Rockville Non-Retail Listings
Price: $4 save 25% $3