00278nam a2200109 a 450000500170000002000150001708200200003210000210005224500410007326000390011430000150015320251203091739.0  a041346430X  a792.02,bD, joh  aJohnstone, Keith  aImpro: improvisation and the theatre  aLoNew DelhionbMethuen Dramac1981  a208p, 23cm