LACK, DAVID | | 
1943a. The age of the blackbird. Brit. Birds, 36(9):166-175. 
19436. The age of some more British birds. Brit, Birds, 36(10); 
193-197; 36(11):21)-221,. 
1946a. The life of the robin. Rev. ed. London: H. F. and G. 
Witherby, Ltd. xvi + 22hpp. 
1946b. Do juvenile birds survive less well than adults? Brit. 
Birds, 39(9):258-26h. 
pid es significance of clutch size. The Ibis, 89(April 197): 
302-352. 
LACK, DAVID, and A. SCHIFFERLI ? 
1948. Die Lebensdaver des Stares. Ornith. Beob., 5(3):107-11h. 
LEOPOLD, ALDO 
1921. A hunter's notes on doves in the Rio Grande valley. The 
Conder, 23(1):19-21. | 
sf Game management. New York: Charles Scribner's Sons. xxi + 
lpp. 
LEOPOLD, ALDO, THEODORE M. SPERRY, WILLIAM S. FREENEY, and JOHN A. 
CATENHEUSEN 
1943. Population turnover on a Wisconsin pheasant refuge. Jour. 
Wildl. Mgt., 7(h):383~39h. 
LEWIS, HARRISON F. 
1929. The natural history of the double-crested cormorant 
(Phalacrocorax auritus auritus (Lesson)). Ottawa: Bu-Mi-Lou Books. 
iv + Olipp. 
LINCOLN, FREDERICK C. | 
1930. Calculating waterfowl abundance on the basis of banding 
returns, U.S. Dept. Agric. Circ. No. 118, lp. 
1933. State distribution of returns from banded ducks / Fourth 
paper: Montana, Nebraska, New Jersey, New York, North Dakota, 
Ontario, and Oregon. Bird<Banding, 4(3):132-146. 
1936. Returns of banded birds / Third paper (Some recoveries of 
water birds from Latin America). Bird-Banding, 7():139=18. 
1939. The migration of American birds. New Yorks Doubleday, 
Doran & Co., Inc. xi + 189pp. 
LOCKLEY, R. M. 
1942. Shearwaters. Londons J. M. Dent and Sons Ltd. xii + 238pp. 
LORENZ, KONRAD: Z. 
1937. The companion in the bird's world. The Auk, 5(3)s25-273. 
LOW, JESSOP B. 
1940. Production of the redhead (Nyroca americana) in Iowa. 
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