Columbia subject headings:
Harvard subject headings:
Büscher, Wolfgang, 1951---Travel--North America.
Büscher, Wolfgang, 1951---Travel--United States.
Travelers--21st century--Biography.
United States--Description and travel.
Princeton subject headings:
Büscher, Wolfgang, 1951---Travel--North America.
Büscher, Wolfgang, 1951---Travel--United States.
Travelers--21st century--Biography.
United States--Description and travel.