Barnes & Noble laid off an unspecified number of employees at its distribution warehouse in Monroe, NJ earlier this week. In addition, the Social Security Administration is looking into possible discrepancies in employment information at the center, though a BN spokeswoman said “the reduction in workforce … has nothing to do with the Social Security inquiry,” and declined to say how many employees were being questioned in the matter. MyCentralJersey.com Sales for Books-A-Million’s first quarter dropped 11 percent to $104 million, with store comps falling 13.2 percent from last year (when the company reported a 3.6 percent drop from 2009.) […]