A birdkeeper's guide to softbillsde David AldertonMateriasCage birdsWild birds as petsEdiciones (1)A birdkeeper's guide to softbills (1987)Tetra Press · inglés · ISBN 9783923880713Más obras de David AldertonA birdkeeper's guide to parakeets1998Discovery - The Sea (Discovery)A birdkeeper's guide to pet birds