"Opera's." . . "Penguin." . . "Opera." . . "Opéra." . . . . . . . . . "A history of opera : the last four hundred years" . . . . "Looks at the long history and evolution of opera, discussing the social, political, literary, and economic circumstances relevant to it, as well as the polemics that have accompanied it and the problems that it has faced in the last half century." . . . . . . . . "Handboeken (vorm)" . . "History" . . . . "Oper." . . "Oper" . . . "Opery historia i krytyka." . . "Opera History." . .