Virtually all we can tell you to date appears to the left; no advance copies of this hot item--ostensibly the innermost word on Watergate--are being sent out for review. Newsweek has it tied up until after the issue containing excerpts hits the newsstands on February 20. No secretaries or typesetters are talking; there are no sneaky leaks to report. But libraries that have taken subscriptions to POINTERS for their patrons can be assured that it will appear among the books ""From the Headlines"" on the April 1 list. And as soon as possible, of course, there'll be a full review in Kirkus.