Columbia subject headings:
Authors, German--20th century--Bibliography.
Rakette, Egon H. (Egon Helmut), 1909---Bibliography.
Harvard subject headings:
Authors, German--20th century--Bibliography.
Rakette, Egon H. (Egon Helmut), 1909---Bibliography.
Princeton subject headings:
Authors, German--20th century--Bibliography.
Rakette, Egon H. (Egon Helmut), 1909---Bibliography.