A Serological Estimate of Monzygotic Twinning in Sheep
Copyright © 1968 The American Genetic Association. Published by Oxford University Press. All rights reserved. The definitive version is available at: http://jhered.oxfordjournals.org/cgi/reprint/59/3/211.
William D. Stansfield. "A Serological Estimate of Monzygotic Twinning in Sheep" Journal of Heredity 59.3 (1968): 211-212.
Available at: http://works.bepress.com/wstansfi/20