A concurrent show of 75 of the artist's drawings will be at the Corcoran Gallery, Feb. 14-May 2.

A concurrent show of Mendieta's work is at Lelong Gallery, 528 West 26th Street, Chelsea, through July 30.

Two other, smaller concurrent shows of abstract work deserve note.

Javits got mixed reviews last week from exhibitors at some of the 2,000 booths at concurrent shows on fashion, medical devices and computer printing.

Nearly all the later efforts on view in these concurrent shows, which survey three decades of work in various mediums, pale considerably by comparison.

A result of these concurrent shows is a kind of Jacob Lawrence festival that no one interested in American art or American history will want to miss.

There is much to savor here, and in the concurrent show of etchings from the museum's Dunnigan collection.

The Studio Museum in Harlem is looking sharp with three concurrent shows, the outstanding one being a single big sound-sculpture by Nadine Robinson.

(The gallery draws a more high-powered if also apt parallel with a small concurrent show of Sigmar Polke's beautifully nonchalant drawings from the 1960's.)

Equally compelling was Mr. Nixon's concurrent show at the Zabriskie Gallery, which consisted entirely of this series of portraits.