576.8
Par
 Park, William Hallock
  Pathogenic microörganisms; a practical manual for students, physicians and health officers, by William Hallet Park and Anna Wessels Williams; 10 th. ed. enl. and thereughly rev.   Philadelphia, Lea & Fobiger, º1933.
   ix, 17-867 p., incl. 215 ilus. y XI láminas en colores, 24 cm.