When searching this index, click on the appropriate letter on the letter bar above. This will take you to that section of the bibliography. Clicking on the letter at the start of the section returns you to the letter bar.
Every page has a link back to the letter bar.
This is marked 'return' and can be used instead of the 'back' command on your web-browser, if you wish. The print version of this section of the bibliography was published in June 1979 by Peter Roberts. This version incorporates corrections and additions, both those assembled by Roberts and those gleaned from other sources by Hansen. Further corrections are, of course, welcomed. OCR scanning of printed version courtesy of Mark Plummer.