Prenatal sonography: a useful adjunct in the management of the gravid captive Pacific walrus (Odobenus rosmarus divergens).

1994 ◽  
Vol 13 (6) ◽  
pp. 485-486 ◽  
Author(s):  
L L Barr ◽  
D Gillespie ◽  
M K Campbell ◽  
D S Babcock
2015 ◽  
Vol 32 (2) ◽  
pp. 588-601 ◽  
Author(s):  
James G. MacCracken ◽  
R. Brad Benter

PLoS ONE ◽  
2014 ◽  
Vol 9 (4) ◽  
pp. e93035 ◽  
Author(s):  
Chadwick V. Jay ◽  
Jacqueline M. Grebmeier ◽  
Anthony S. Fischbach ◽  
Trent L. McDonald ◽  
Lee W. Cooper ◽  
...  

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