@article {551,
	title = {Key catalogue of parasites reported for Chiroptera (bats) with their possible public health importance.},
	journal = {National Institute of Health Bulletin, No.155: 603-789.},
	year = {1931},
	pages = {479},
	author = {Stiles, C. W. and Nolan, M. O.}
}
@article {473,
	title = {The Manx shearwater{\textquoteright}s flea.},
	journal = {British Birds 25(6): 171-172.},
	year = {1931},
	pages = {407},
	author = {Salmon, H. M.}
}
@article {388,
	title = {The grey squirrel.},
	journal = {London, p.68.},
	year = {1931},
	pages = {295},
	author = {Middleton, A. D.}
}
@article {284,
	title = {Notes on the tree sparrow.},
	journal = {British Birds 25(10): 278-285.},
	year = {1931},
	pages = {35},
	author = {Boyd, A. W.}
}
@article {295,
	title = {Additions to the insect fauna of Lancashire and Cheshire for the years 1929-30.},
	journal = {17th Report of the Lancashire and Cheshire Fauna Committee (1930): 15-21.},
	year = {1931},
	pages = {46},
	author = {Britten, H.}
}
@article {97,
	title = {Recent excavations in Anglo Saxon cemeteries in Cambridgeshire and Suffolk.  Cambridge Antiquarian Society.},
	journal = {Quarto Publications. New Series, No. III: 1-90 (p.39).},
	year = {1931},
	pages = {263},
	author = {Lethbridge, T. C.}
}
@article {16,
	title = {The health and parasites of a wild mouse population.},
	journal = {Proceedings of the Zoological Society of London (1931): 657-721.},
	year = {1931},
	pages = {131},
	author = {Elton, C., Ford, E., Baker, J. R. and Gardner, A. D.}
}
@article {58,
	title = {Insects, ticks, mites and venomous animals of Medical and Veterinary Importance (Part II Public Health).},
	journal = {H. R. Grubb Ltd, Croydon.},
	year = {1931},
	pages = {339},
	author = {Patton, W. S.}
}
