Supertraining is more of a reference book. It is not very accessible and quite poorly written if I may say so. It is very in dept though. Science and Practice of Strength Training by Vladimir Zatiorsky covers some interesting topics. Here are some other books out of this article:
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I haven't read them (except #5), so I can't comment on whether they are any good.
1. Training for Speed, by Charlie Francis
2. Modern Methods of Strength and Power, by Christian Thibaudeau
3. A System of Multi-Year Training in Weightlifting, by A.S Medvedev
4. Functional Training for Sports, by Mike Boyle
5. Science and Practice of Strength Training, by Vladimir Zatiorsky
6. Coaches Strength Training Playbook, by Joe Kenn
7. Facts and Fallacies of Fitness, by Mel Siff
8. East German Text of Athletics (Track and Field), by Gerhardt Schmolinsky
9. Training of the Weightlifter, by R.A. Roman
10. Peak When It Counts, by William Freeman