The Leopard Gecko Manual (Herpetocultural Library)
These books were the first and are probably still the best available on the husbandry of commonly kept and traded reptiles.  They are mandatory readying for most keepers, novice and expert alike. Philippe de Vosjoli can single-handedly claim credit for helping to slash the mortality in reptiles sold through the pet trade by better educating purchasers  --Reptilian Magazine, March 1995