
    No. 72-459.
    No. 72-620.
    Sloan, Treasurer of Pennsylvania, et al. v. Lemon et al.; and Crouter v. Lemon et al.
   Appeals from D. C. E. D. Pa. [Probable jurisdiction noted, 410 U. S. 907.] Motion of National Association of Independent Schools, Inc., for leave to participate in oral argument as amicus cuñae denied.  