SOLO is Oxford's resource discovery tool, and it will tell you the location of each book and journal clearly so you know which library you need to visit.
Subject search terms to use in SOLO include the following
Law -- Social aspects
Law and anthropology
Effectiveness and validity of law
Law -- Psychological aspects
Take careful note of the location of any books in print, some research interests will lead to your discovering other parts of the Bodleian not only Law Bod and/or the Social Science Library.
Following is an example of book in both Social Science (a lending copy) and the Law Library, but also available online to holders of an Oxford SSO.
Example of a title in the Bodleian Social Science Library.
Example of title in the Bodleian Law Library, so can only be read while in that library.
A final category of books are those which are Stored Offsite. In the example below, there is online access for holders of an Oxford SSO - but if you would prefer to work form the physical volumes, or you are a visiting reader without an Oxford SSO you are welcome to use the Request from Closed Stacks service and have the volumes delivered to the Bodleian Reading Room of your choice.