TY - BOOK AU - Clark,Kathleen C. AU - Kreel,Louis TI - Clark's Positioning in radiography SN - 081515190X PY - 1979/// CY - London PB - W. Heineman Medical Books Publications KW - Radiography, Medical KW - Positioning N1 - v. 1; Routine radiography --; v. 2; Specialized radiography ER -