Usage examples for 121

1. 43: 121, March 14, 1894. Pipistrellus subflavus Miller, N. Amer.  A Synopsis of the American Bats of the Genus Pipistrellus by Walter W. Dalquest E. Raymond Hall

2. 121, 173 Cadore, i.  Sketches and Studies in Italy and Greece, Vol III. by John Symonds