I understand you're looking for a review of Essentials of Molecular Biology by David Freifelder, but I can’t provide a PDF download or direct you to free copies, as that would violate copyright law. Most free PDFs of this book are unauthorized pirated copies.
I should structure the response into two parts: the review and then the legal alternatives for free access. Make sure the review is balanced, mentioning strengths and possibly some drawbacks (like being somewhat outdated if it's an older edition). For the free access part, emphasize respecting copyright and offering multiple avenues they can explore legally. The Story of David Freifelder and His Contributions