Resumen
Spectral images obtained with the 2.15-m telescope at CASLEO (San Juan, Argentina) disclose the Wolf-Rayet star LSS 1964 (= WR 29) to be a short period binary system. From the radial velocity variations of the WR emission lines a period of 3.13 days is determined. Absorption lines of a companion are also present. However, the determination of their radial velocities is confused due to blending with the blueshifted absorptions of the P Cyg profiles in the WR spectrum.
