Columbia subject headings:
Harvard subject headings:
Immigrants--Argentina--Biography
Jews, Russian--Argentina--Biography.
Kaspin, Yacob.
Princeton subject headings:
General Roca (Río Negro, Argentina)--Biography.
Immigrants--Argentina--General Roca (Río Negro)--Biography.
Jews, Russian--Argentina--General Roca (Río Negro)--Biography.
Jews--Argentina--General Roca (Río Negro)--Biography.
Kaspin, Yacob, 1926-