Nook helps salvage B&N sales

NEW YORK — Increases in Nook products helped offset a decline in physical book stores at Barnes & Noble during the second quarter. Total sales for the period ended Oct. 29, 2011, slipped 0.6% to $1.89 billion from $1.90 billion in the year-earlier quarter, with the biggest drop occurring at the chain’s college stores. Online revenue grew 17% in the quarter to $206 million, which the company attributed to increases in sales of ebooks and its Nook line of e-reading devices. The company posted a worse-than-expected net loss of $6.6 million for the second quarter, compared with a net