Tube Passing Quotes

1 Tube Passing quotes by 1 unique authors

• The digestive canal represents a tube passing through the entire organism and communicating with the external world, i.e. as it were the external surface of… — Ivan Pavlov

Who Wrote These Tube Passing Quotes

1 author contributed a total of 1 Tube Passing Quote as follows:

• 1 Tube Passing Quote by Ivan Pavlov