TY - BOOK AU - Lal Pawan AU - University of Delhi. Faculty of Medical Sciences. Department of Surgery ED - University of Delhi. Faculty of Medical Sciences. Department of Surgery TI - Predictive value of pre-operative ultrasonography for assessing technical difficulties and complications during laparoscopic cholecystectomy and its correlation with conversion to open procedure. (Supervisor : Dr. P. N. Agarwal) PY - 2000/// KW - SURGERY ER -