Effect of varying day-length on time of oviposition in domestic fowl /
Biellier, H. V.(Harold Victor),1922-author.
Ostmann, O. W.,author.
University of Missouri.Agricultural Experiment Station.
Title from front cover.
"September, 1960."
Includes bibliographical references (pages 48-52).
Chickens
Chickens
Chickens
Chickens