Columbia subject headings:
Avril, Henrique, 1866-1950.
Photographers--Venezuela--Biography.
Photography--Venezuela.
Harvard subject headings:
Avril, Henrique, 1866-1950.
Photographers--Venezuela--Biography.
Photography--Venezuela.
Princeton subject headings:
Avril, Henrique, 1866-1950.
Photographers--Venezuela--Biography.
Photography--Venezuela.