id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
inhs-157	Bellrose, Frank Chapman; Crompton, Robert D.	Migrational Behavior of Mallards and Black Ducks as Determined from Banding	1970	76	.pdf	application/pdf	24658	1133	57	The only important geographic differ- ence between Illinois recoveries and those at Delta Marsh occurs in the re- gion of the Delta Marsh. The longitudinal distribution of black duck indirect recoveries on the basis of mean and standard deviation lines.	cache/inhs-157.pdf	txt/inhs-157.txt