Não informado. USSR and eastern europe scientific abstracts. Joint Publications Research Service.
Citação do estilo Chicago (17ª ed.)Não informado. USSR and Eastern Europe Scientific Abstracts. Arlington, Va: Joint Publications Research Service.
Citação MLA (8ª ed.)Não informado. USSR and Eastern Europe Scientific Abstracts. Joint Publications Research Service.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.