Take a close look at the gold of brewers
Biendl, M.; Engelhard, B.; Forster, A.; Gahr, A.; Lutz, A.; Mitter, W.; Schmidt, R.; Schönberger, C.: Hops: Their Cultivation, Composition and Usage, 2014, 336 pages, hardcover, Fachverlag Hans Carl GmbH, Nuremberg, Germany, 99.00 EUR.