All About Discus by Herbert R. Axelrod,C.W. Emmens, Acceptable Book

All about Discus Hardcover Leonard P., Axelrod, Herbert R. Schult

Breeding Aquarium Fishes, Book 2 by Herbert R. Axelrod

All About Discus By Herbert R Axelrod Softcover 1972 Rare

ALL ABOUT DISCUS By Herbert R Axelrod Hardcover Fish Care Breeding Health Guide

All about Discus by Herbert R. Axelrod and Leonard P. Schultz (1972, Hardcover)

Vintage All About Discus Herbert R Axelrod TFH Green HC 1978 revised edition