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The literature on the growth and physical development of the fetus, infant, and child: a quantitative summary
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The comparative validity of telephone and face-to-face interviews in the measurement of message diffusion from leaflets
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Understanding Automation
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A test of the counting of elephants from the air
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Airborne fungi in Los Angeles, California
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Fossil birds from the lower eocene Green River formation (USA)
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Phalaropes of the Western Lake Erie Region
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Rodel-roller.
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Land and Water Areas of the United States
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Unpublished Data From the 1950 Census of Population
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TESTING AND RATING AIR FILTERS
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A note on improving the response to mail questionnaires
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Census of Population: 1950
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The study of local history in the United States of America
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Filteratemschutzgeraet mit feinstaubfilter.
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Periodical Bibliographies and Abstracts for the Scientific and Technological Journals of the World
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EDITORIAL BOARD Faculty WILLIAM E. MASTERSON, Editor-n-Chief
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How many districts have food and health policies?
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Custumals of the Sussex Manors of the Archbishop of Canterbury
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