کتاب های Fokkinga
![A Gentle Introduction to Category Theory - the calculational approach](http://cdn.ketabkoo.com/covers/1/178016-n.jpg)
A Gentle Introduction to Category Theory - the calculational approach
Fokkinga, M.M., 1994![A gentle introduction to category theory. The calculational approach](http://cdn.ketabkoo.com/covers/2/264976-n.jpg)
A gentle introduction to category theory. The calculational approach
Fokkinga M.M., 1994![Gentle introduction to category theory](http://cdn.ketabkoo.com/covers/7/766566-n.jpg)
Gentle introduction to category theory
Fokkinga., 1994![Law and Order in Algorithmics [PhD thesis]](http://cdn.ketabkoo.com/covers/13/1371112-n.jpg)