Période

11 résultats pour : parasite

  • Page
  • sur
  • 1
Connectez-vous pour plus de résultats
A. Myzostoma Gigas
UMG23A42_162

A. Myzostoma Gigas

Ray Angel
UMG23A42_163

Ray Angel

étude des insectes pour la lutte contre les parasites, 1940
UMG22A86_437

étude des insectes pour la lutte contre les parasi...

Parasites & Slackers don’t Work Themselves & Hinder Other People's Work
UMG22A52_014

Parasites & Slackers don’t Work Themselves & Hinde...

Le Nicotiné de St. Julien
UMG22A49_052

Le Nicotiné de St. Julien

L to R: Miss Lucia McCollock, Miss Mary Bryan, Miss Florence Hedges, The women scientists make cultures of the parasites, create experiments and do all sorts of technical laboratory work ca. 2 January...
UMG22A10_064

L to R: Miss Lucia McCollock, Miss Mary Bryan, Mis...

Pedicularis palustris
UMG20B46_447

Pedicularis palustris

Flatworms
UMG20B29_360

Flatworms

Magic lantern slide WW1
UMG20B22_329

Magic lantern slide WW1

Forest Kellison, 4 H Club Member raising a sheep. Examining the quality of the fleece under direction of Harold Willey, Farm Bureau Agent. 1921
UMG20A63_062

Forest Kellison, 4 H Club Member raising a sheep. ...

Forest Kellison, 4 H Club member treating his sheep for internal parasites under direction of Harold Willey, Farm Bureau Agent. 1921
UMG20A63_063

Forest Kellison, 4 H Club member treating his shee...