%0 Journal Article %T Assessing the viability of preimplantation embryos in vitro %A Butler, J.E. %A Biggers, J.D. %A , %J Theriogenology %V 31 %N 1 %P 115-126 %@ 0093-691X %D 1989-01-01 %I Elsevier BV %~ DeepDyve