Boatloads of beetle husbandry and related articles in Invertebrates-Magazine over the years from some big hitters in the international beetle breeding scene (Jahn, Lai, Larson, Ludanyi, etc.). First time available in electronic format, every issue from 2001 to 2020.
https://coachwhip.com/collections/invertebrate-pets/products/invertebrates-magazine-2004
https://coachwhip.com/collections/invertebrate-pets/products/invertebrates-magazine-2004