Lichtenstein Peter Max John McHale Takashi Murakami Julian Opie Claes Oldenburg Eduardo Paolozzi Sigmar Polke Hariton Pushwagner Mel Ramos Robert Rauschenberg James Rosenquist Ed Ruscha George Segal Aya Takano Wayne Thiebaud Andy Warhol Tom Wesselmann William Eggleston Richard Lindner     POP ART IN BRITAIN At the "This is Tomorrow'' exhibition of