There are 2 books by R. J. O'Brien on BookOrb. A strong starting point is Mathematics for economists and social scientists (1971). The bibliography below is in publication order, with series grouped in reading order.
Standalone books
Frequently asked questions
How many books has R. J. O'Brien written?
BookOrb lists 2 books by R. J. O'Brien.
Where should I start with R. J. O'Brien?
A good starting point is Mathematics for economists and social scientists (1971).
What is the R. J. O'Brien books in order list?
In publication order: 1. Serial correlation in econometric models (1969), 2. Mathematics for economists and social scientists (1971).