What has the author Sam Ziff written?

Sam Ziff has written:

'Silver dental fillings' -- subject(s): Toxicology, Mercury, Dental amalgams, Toxicity, Dental Amalgam, Mercury Poisoning, Fillings (Dentistry)

'Infertility & birth defects' -- subject(s): Abnormalities, Human, Dental amalgams, Effect of chemicals on, Etiology, Fetus, Human Abnormalities, Infertility, Mercury, Toxicology