Willadsen, S M Successful long-distance transport by car of sheep embryos stored in liquid nitrogen. [electronic resource] - Bulletin de l'Academie polonaise des sciences. Serie des sciences biologiques Feb 1979 - 725-6 p. digital Publication Type: Journal Article Subjects--Topical Terms: AnimalsEmbryo, MammalianFemaleFreezingPregnancyPreservation, BiologicalSheep--embryologyTransportation