@article {	154	,
	title = {Ectoparasites.},
	journal = {Report of the Fair Isle Bird Observatory (1950): 40-41.},
	year = {1951},
	author = {Williamson, K.}
}
@article {	152	,
	title = {Numbers of black redstarts on passage in Man.},
	journal = {British Birds 33(9): 252-254.},
	year = {1940},
	author = {Williamson, K.}
}
@article {	153	,
	title = {Fair Isle Bird observatory. First report, 1948.},
	journal = {The Scottish Naturalist 61: 19-31.},
	year = {1949},
	author = {Williamson, K.}
}
@article {	155	,
	title = {Fleas and flatflies.},
	journal = {Bulletin of the Fair Isle Bird Observatory 7: 45-48.},
	year = {1952},
	author = {Williamson, K.}
}
@article {	157	,
	title = {Records of fleas from Fair Isle birds.},
	journal = {Bulletin of the Fair Isle Bird Observatory 1: 36.},
	year = {1952},
	author = {Williamson, K.}
}
@article {	158	,
	title = {Bird fleas at Fair Isle in spring 1954.},
	journal = {Bulletin of the Fair Isle Bird Observatory 2: 235-236.},
	year = {1954},
	author = {Williamson, K.}
}
@article {	159	,
	title = {Records of bird-fleas at Fair Isle in summer and autumn, 1954.},
	journal = {Bulletin of the Fair Isle Bird Observatory 2: 323-324.},
	year = {1955},
	author = {Williamson, K.}
}
