‘Ecology of the Planted Aquarium’ (4th Edition, 2023) is now available as an affordable paperback to hobbyists overseas (Britain, Italy, Japan, etc.), not just to those in the U.S. While there is a different–and maybe prettier– cover for Amazon-printed books, all BTPS-printed books, eBooks, and Amazon Kindles contain the same material. This is a long-awaited improvement, because shipping a printed book overseas is prohibitively expensive.
Diana Walstad's Books and Articles 