Barr Pharmaceuticals Inc., the drug company that has operations in Pomona, earned $57 million, or 52 cents a share, in the second quarter, compared with a profit of $45 million, or 41 cents a share, a year earlier. Revenues rose to $779 million, from $634 million. Barr, which is based in Montvale, N.J., has its Barr Laboratories [...] ...