LOS ANGELES -- A war of words between Treasurer Kathleen Brown of California and a small New Jersey bank has prompted Newsweek magazine to pull an advertisement by the bank that sharply criticizes college savings bonds sold by several states.

Editors withdrew the advertisement on Friday, a few weeks after Ms. Brown wrote to complain that an earlie ad went too far by alleging that zero coupon college savers bonds are "unsafe and unsound."

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