1995
Isadore Epstein, Estonian-American astronomer and academic (born 1919)
Isadore Epstein, Estonian-American astronomer and academic (born 1919)
Isadore Epstein, Estonian-American astronomer and academic (born 1919)
Estonian astronomer
Isadore Epstein, Estonian-American astronomer and academic (born 1919)
Isadore Epstein, Estonian-American astronomer and academic (born 1919)