TY - BOOK AU - Soudmand Mehdi AU - Prof G C Trigunayat Supervisor AU - University of Delhi. Faculty of Science. Department of Physics and Astrophysics ED - University of Delhi. Faculty of Science. Department of Physics and Astrophysics TI - Role of impurities in growth and solid state phse transformations of polytypic pbI2 single crystals PY - 1990/// KW - PHYSICS ER -