[Adjusting the central ray of the beam in cephalometric roentgenography].

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@article{Poel1972AdjustingTC, title={[Adjusting the central ray of the beam in cephalometric roentgenography].}, author={A C van de Poel and Kirsten A. Peters and F E Schrijer}, journal={Nederlands tijdschrift voor tandheelkunde}, year={1972}, volume={79 5}, pages={203-5} }