Multi-frequency study of the B3 VLA sample - IV. 74-MHz flux densities from VLA A-array data K.-H. Mack, M. Vigotti, L. Gregorini, U. Klein, W. Tschager, R. T. Schilizzi and I. A. G. Snellen A&A, 435 3 (2005) 863-870 Published online: 13 May 2005 DOI: 10.1051/0004-6361:20042621