Industrial chemistry, chemical engineering distinct from

One must respect the opinion and conjecture of W. K. Lewis because he. Walker, and McAdams were the first to expound the unit operations—that concept which gave the first distinctive acceleration of chemical engineering away from industrial chemistry. 

The central theme of the book is the historical identification and development of chemical engineering as a profession in its own right, distinct not only from all other forms of engineering, but particularly from all forms of chemistry including applied chemistry and industrial chemistry. 

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