George H. Scherr / George HScherr
Librería Samer Atenea
Librería Aciertas (Toledo)
Kálamo Books
Librería Perelló (Valencia)
Librería Elías (Asturias)
Donde los libros
Librería Kolima (Madrid)
Librería Proteo (Málaga)
This book reviews the slow development of research by isolated investigators who believed that diseases could be caused by infectious organisms. Millions of deaths occurred until the professional communities and general public began to believe that certain health measures could protect against infection and reduce enormous death tolls from disease.