Amidst intermediate corrections or rallies, asset classes tend to have an extended period of bull or bear market. A secular bull market for an asset class is a perfect time to remain invested. On the other hand, price and time correction can extend beyond a decade in bear markets. This column discusses stocks for exposure to an undervalued asset class likely to witness a comeback rally.Without extending the suspense, industrial commodities are the most undervalued asset class. To put things into perspective ...