TY - BOOK AU - Abdul Wahab Mohd. 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 - Low temperature X-ray differaction study and crystal structure determination of cdl/sub/2 polytypes PY - 1980/// KW - PHYSICS ER -