A Search for Strong Radio Spectral Lines in the Range 12.4 to 15.1 and 15.3 to 17.3 GHz

Strong radio spectral llnes were searched for in the radio sources Sgr A, Sgr B2, W49, and Cas A in the frequency range 12.#15.1 GHz and in the sources W3, Ori A, VY CMa, Vir A, and 3C 273 in the frequency range 15.3-t7.3 GHz. No strong spectral lines exceeding 440 flux units were detected with the NRAO 140-foot telescope in any of these sources.