Latin dictionaries commonly offer you a clue to the declension by indicating secondly the genitive singular ending, not the nominative plural ... as you will no doubt now recall! FWIW, the Dons concur with the plural errata in English usage (and Spry will no doubt blame the hapless Prune for the gaffe, 'twas ever thus).
Agree with others' sentiments, poor cred - safety is surely that field, above all others, where judicious nitpicking and impeccable communication make the difference.
Last edited by dogle; 24th Mar 2014 at 16:56.