How to decipher Law Library call numbers

What do the parts of a call number mean?

Call numbers are basically divided into two parts:

subject classification: series of numbers that represent the subject area
author classification: series of letters and/or numbers that represent the author or title of the information

Some call numbers have a third part for the year of publication or extra author information.

Books and serials use different classification systems. The call numbers represent the following:

Book	A Guide to Company Law by Zvonimir Hribar
N40 H873G	Subject: N40 = Company Law Author: H873 = Hribar G = Guide
Serial	Harvard Law Review
	Serials are shelved in alphabetical order by title on the 2nd floor of the Law Library. Recent, unbound issues can be found in the first bay of shelving, preceding bound journals beginning with "A". Recent issues of some popular titles are shelved in Reserve, located behind the Loans Desk.