كتب ذات صلة

Comparative studies on certain features of nematodes and their significance

• The sheep-fluke
  المؤلفون: Cobb, Nathan Augustus
• Seed wheat: an investigation and discussion of the relative value as seed of large plump and small shrivelled grains.
  المؤلفون: Cobb, Nathan Augustus
• Methods of using the microscope, camera-lucida and solar projector for purposes of examination and the production of illustrations.
  المؤلفون: Cobb, Nathan Augustus