Corrections
MAY 01, 1977
DOI: 10.1063/1.3043352
April, page 61—photo captions for Walter Kohn and Norton Lang were mistakenly reversed; Kohn is at far right, Lang adjacent.
February, page 36—Caption to fig. 5 should read “…delivery costs would fall from $2000–$4000 per kg to $40–$120 per kg.”
© 1977 American Institute of Physics
