I'm not sure what the words on the card say, but I think it might have to do with something about onions and potatoes being a big part of Belorussian cuisine. 

This is a vintage postcard from 1972 entitled Tourism Year of the Americas '72 . It features four iconic tourist attractions in the United States: Monterey, the redwood trees, Gloucester, and the USS  Constellation . It is also a prepaid postcard. The cost to mail this card in 1972? Just six cents!