• publisher: New York, The University society, incorporated
  • creator: Calkins, Gary N. (Gary Nathan), b. 1869
  • Keyword: Microorganisms. Unicellular organisms. Protozoa.
  • years: [c1932]
  • pages: iv, [4], 135 p.
  • language: eng
  • lccn: s
  • class: QH274
  • download: pdf file