The unity of science : a sketch /
Hjort, Johan
The unity of science : a sketch / by Johan Hjort. - London ; Copenhagen [etc.] : Gyldendal, [1921]. - VI, 176 p. ; 19 cm.
The unity of science : a sketch / by Johan Hjort. - London ; Copenhagen [etc.] : Gyldendal, [1921]. - VI, 176 p. ; 19 cm.