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Sleep|August 1, 1991
Increases in number of REMS and REM density in humans following an intensive learning periodC Smith, L LappPhysiology & Behavior|January 1, 1986
Prolonged increases in both PS and number of REMS following a shuttle avoidance taskC Smith, L LappOccupational Medicine (Philadelphia, Pa.)|January 1, 1993
How silicosis and coal workers' pneumoconiosis develop--a cellular assessmentN L Lapp, V CastranovaThe American Review of Respiratory Disease|June 1, 1975
Factors influencing the measurement of closing volumeB Make, N L LappBulletin De Physio-Pathologie Respiratoire|July 1, 1975
Cardio-respiratory function in United States coal workersN L Lapp, W K MorganOccupational and Environmental Medicine|April 1, 1994
Airways obstruction, coal mining, and disabilityN L Lapp, W K Morgan, G ZaldivarArchives of Environmental Health|June 1, 1975
Polyvinyl chloride pyrolysis products. A potential cause for respiratory impairmentP L Polakoff, N L Lapp, R RegerPageof 4