I'm a 4th year medical student, and found this book extremely helpful during my Blood Bank rotation. It is really good at explaining the concepts behind the technical procedures.

The Harmening books which span more than twenty years in the making are without question the best source of transfusion medicine practices on the market today. Content areas include genetics, molecular biology, blood groups, antibody identification, transfusion transmitted diseases, hemolytic disease of the newborn, autoimmune hemolytic anemia, etc... Contributors are experts in their field providing a wealth of knowledge to the blood banking student and transfusion medicine fellow. Every blood bank should buy this book!!
Virginia C. Hughes, MS, MT(ASCP)SBB