. . "Since 1950" . . . "Textbooks"@en . "Companion to the study of the German language, including a description of basic German grammar and an introduction to idiomatic usage" . "Companion to the study of the German language, including a description of basic German grammar and an introduction to idiomatic usage"@en . . "Companion to the study of the German language including a description of basic German grammar and an introduction to idiomatic usage" . . . . "Companion to the study of the German language Including a description of basic German grammar and an introd. to idiomatic usage" . . . "Companion to the study of the German language : including a description of basic German grammar and an introduction to idiomatic usage" . . "Companion to the study of the German language : including a description of basic German grammar and an introd. to idiomatic usage" . . . . . . . . "Companion to the study of the German language, including a description of basic German grammar and an introd. to idiomatic usage"@en . . .