If you find a PDF that is 350 pages, delete it. The real book is ~650 pages . The shorter version is a "summary" that misses the nuance of The Concept of Law .

Use the PDF for 80% of your syllabus (Analytical & Historical schools). For the remaining 20% (Feminism, Critical Legal Studies, Postmodernism), supplement with 5-10 pages from a modern author like R.W.M. Dias or a quick Google Scholar search. The PDF’s index helps you locate exactly where it falls short.

: Looks at the social impact of law (Roscoe Pound’s "Social Engineering").