Publication:THRMWRLDLG0000

AbeBooks claims for this edition an ISBN of 0-451-05213-7, which they also apply to the 2nd printing, also giving it catalog number #Q5213 and giving for both as year of publication 1972. It is a pity that this information is then invalidated further on the same page by stating that 0-451-06814-9 #Y6814, $1.25 the 5th printing is also from 1972 and that 0-451-08424-1 #W8424, $1.50 -with a slightly different cover- is also a 1972 reprint.--Dirk P Broer 20:51, 1 November 2012 (UTC) We have 0-451-08424-1 for the 1978 7th printing.--Dirk P Broer 21:12, 1 November 2012 (UTC)