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:
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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