[Achievements of the veterinary service in the Bulgarian People's Republic during 25 years of freedom].
D002031:Bulgaria; D049673:History, 20th Century; D014730:Veterinary Medicine / Q000266:history*
Dostizheniia veterinarnoĭ sluzhby Narodnoĭ Respubliki Bolgarii za 25 let svobodnoĭ zhizni.