books.google.it - "Letters to the Editor" issued as Part 2 and separately paged from v. 148, 1967. Beginning in 2009, the Letters published only online....http://books.google.it/books/about/The_Astrophysical_Journal.html?hl=it&id=-oosAAAAIAAJ&q=atmosphere&utm_source=gb-gplus-shareThe Astrophysical Journal
