"Complete Guide For Growing Plants Hydroponically"

J. Benton Jones wrote a superb book on the subject.

The “CRC Press” is defunct and was sold to “Taylor & Francis Enterprises,” which means if this book was not transferred to the new owners for copyright it entered the public domain. The copyright on the book was not properly applied by referencing the now vanished company, therefore something that does not exist cannot be assigned copyright.

That’s my be…