[en] An experiment measuring the rates and properties of opposite-sign dimuons produced by muon neutrino- and antineutrino-nucleon collisions is reported. The hadronic energy and the momentum vectors of the two muons were measured by use of the techniques of calorimeter targets and solid iron toroidal magnetic spectrometers. The experiment used broad-band neutrino beams at Fermilab. A comparison of the dimuon data is made with a model for charm meson weak production and semileptonic decay, showing good agreement between theory and data with appropriate choices of parameters. Other sources of dimuon final states in neutrino-nucleon scattering are discussed. In particular, the mechanisms and implications of b-quark production to dimuon data are examined