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Subjects United States Remove constraint United States: United States Subjects Agricultural surveys Remove constraint Agricultural surveys: Agricultural surveys Subjects farrowing rate Remove constraint farrowing rate: farrowing rate

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1. A study of hog questionnaire modifications

Description:: Title from title screen (viewed on Jan. 21, 2011).
Author:: Kleweno, Douglas G. , Steiner, Michael A. , United States Dept. of Agriculture. Statistical Reporting Service. Statistical Research Division.
Subject:: Agricultural surveys , Swine , United States , Swine farrowing facilities , United States , Statistics , statistics , swine , farrowing rate , United States
Year:: 1985