TY - JOUR A1 - Pearl, R. A1 - Miner, J.R. A1 - Parker, S.L. T1 - Experimental studies on the duration of life. XI. Density of population and life duration in Drosophila Y1 - 1927 DO - 10.1086/280154 JF - American Naturalist VL - 61 IS - 675 SP - 289 EP - -318 ER -