as silent as a mouse

accommodation ladder Benedict-Denis' method Bokula cie 1976 uniform-chromaticity-scale diagram complete survey enchantedly feeding hopper force-feed lubrication system high-level microprogramming language Homalium cochinchinense mechanical sieve miller's jackknife test mimouna Nawāshahr right bimodule self-checking numeral Theriotia unliquidated claims us government agency obligation zonal guide fossil