A Swedish book published in the late 1980s.
This inexpensive book was one of the fist post-techno aquarium books: it has graphs of spectrum of various bulbs, and instructions to make your own tanks with a chart of glass thicknesses. It also had interesting designs for living filters, houseplants built in to a tray at the top of the tank to use houseplant roots as aquarium filters. It's a very clever book, really Surprisingly good; lots of innovative ideas for the do-it-yourself types.
Peter Hunnam, Annabel Milne, Peter Stebbing, Crescent Books, New York 1981, 1990.
10.4 x 10.2 x 1 inches, 2.6 pounds.