. . "Harmonic analysis." . . "Pendel." . . "mechanics." . . "waves." . . "Pendulum." . . "Elements of the theory of resonance" . . . . . . . . "Elements of the theory of resonance : illustrated by the motion of a pendulum"@en . "Elements of the theory of resonance : illustrated by the motion of a pendulum" . . . "Elements of the theory of resonance illustrated by the motion of a pendulum" . "Elements of the theory of resonance illustrated by the motion of a pendulum"@en . . . . . . . . . . . . . "Elements of the theory of resonance - illustratedby the motion of a pendulum"@en . . . . "Elements of the Theory of Resonance illustrated by the Motion of a Pendulum. (A course of lectures.)" . . . . . . . . . . . . "[Elements of the Theory of Resonance illustrated by the Motion of a Pendulum. (A course of lectures.)]"@en . . "Resonanz." . . "Resonance." . . "vibrations." . .