A single bound reprint that includes 2 parts, an article by Frank Ludlow and a list of the birds. Originally published separately in The Ibis in 1944:

• The Birds of South-Eastern Tibet. By Frank Ludlow (with Notes by N.B. Kinnear), from The Ibis for January 1944, p. 43-86.
  Ludlow, F. and Kinnear, N.B. (1944), The Birds of South-eastern Tibet. Ibis, 86: 43-91. https://doi.org/10.1111/j.1474-919X.1944.tb07533.x

• Ludlow, F. (1944), The Birds of South-eastern Tibet. Ibis, 86: 176-208. https://doi.org/10.1111/j.1474-919X.1944.tb03877.x

A single bound reprint of an article by Frank Ludlow. Originally published in The Ibis in October 1951.

Ludlow, F. (1951), THE BIRDS OF KONGBO AND POME, SOUTH-EAST TIBET. Ibis, 93: 547-578. https://doi.org/10.1111/j.1474-919X.1951.tb05458.x