I tried to work through that book around the time, decades ago, when it was first published, but I fear that I was not ready for it. On the multiple choice questions, my results were about as good as one would expect from a monkey. I am more than a little bit surprised to see that anyone still remembers B&P's work. I thought it went out-of-print long ago. I think that there have been similar books since then. One example would be Modern Chess Planning by Efstratios Grivas.
https://web.archive.org/web/20140708110805/http://www.chesscafe.com/text/review588.pdf
Its a huge mistake to think of chess in mutually exclusive terms as strategic or tactical because there exists a symbiotic relationship between the two. Probably the best book I have read is Test your positional play by Robert Bellin and Peitro Ponzetto. The title is rather misleading because it deals not with exclusively positional ideas (i.e Silmans rip off of Steinitz principles) but with extracting both strategic and tactical elements from a position and focusing on finding the key element in a chess position.
I have this book on my shelf. Sometimes I think it should be on my study table.