Tefko Saracevic's "Information Science"
I found Saracevic's conclusion that information science and librarianship be not one and the same particularly intriguing because I agree. Although I'm probably way off base, and readily admit, limitly informed, the term "information science" is rather cold, calling to (my) mind a grim, gray space. That's not the library I know! The library world may in many ways be much indebted to the field of information science--the two having evolved into partnering professions--but what the library gives to the community doesn't begin and end with technology; the human element is at it's core, for partnering with patrons in pursuit of knowledge is the purpose after all.
(Random thought: I love, love the eerie beauty of this quote, "Information is that which affects or changes the state of mind..." (p. 1054). Definitely a point to ponder.)