... were the subject of yesterday's Schott's Friday Miscellany:

ad lib. - ad libitum; as much as you like
ibid. - ibidem; in the same source
op. cit. - opere citato; in the work already mentioned
pp - per pro; on behalf of
sic - sic; thus, or literally
viz - videlicet; that is to say, namely


... never understood how we got from videlicet to viz ... and, of course, donning the rc apex of pedantry, we can point out that sic isn't an abbreviation (sic).