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In this paper we present catalogs of photometric and spectroscopic data forM81 globular clusters (GCs). The catalogs include B- and V- photometric andreddening data of 95 GCs, and spectroscopic metallicities of 40 GCs in M81.Using these data, we make some statistical correlations. The results show thatthe distributions of intrinsic B and V colors and metallicities are bimodal,with metallicity peaks at [Fe/H]=-1.45 and -0.53, respectively as has beendemonstrated for our Milky Way and M31. The relation between spectroscopicmetallicity and intrinsic B and V color also exists as it does for the MilkyWay and M31.Comment: Accepted for Publication in PASP, 9 pages, 6 figure

Color and Metallicity Distributions of M81 Globular Clusters