By Butterfield, Herbert.
New York Macmillan 1960 .
167 p.

By Butterfield, Herbert.
Buenos Aires Editorial Huemul 1965 .
164 p.

By Butterfield, Herbert.
Buenos Aires Ediciones Peuser 1961 .
112 p. , Translation of: International conflict in the twentieth century.

By Butterfield, Herbert.
New York Macmillan 1957 .
242 p. 22 cm..

By Butterfield, Herbert.
New York Octagon Books 1972 .
viii, 395 p. , Reprint of the 1929 ed. 23 cm..
0374911304

By Butterfield, Herbert.
Madrid Taurus Ediciones 1958 .
327 p. , Translation of : The origins of modern science. 23 cm..

By Butterfield, Herbert.
New York The Free Press 1965 .
255 p.

By Butterfield, Herbert.
New York Macmillan 1951 .
254 p. 21 cm..

By Butterfield, Herbert.
New York Scribner 1950 .
vi, 146 p. 22 cm..