NF S90-410:1988 Medico-surgical equipment. Implants for surgery. Geometry of holes and slots corresponding to screws with asymmetrical thread and spherical under-surfaces in the equipment of osteosynthesis.
1988NF S90-410:1988 Medico-surgical equipment. Implants for surgery. Geometry of holes and slots corresponding to screws with asymmetrical thread and spherical under-surfaces in the equipment of osteosynthesis.