“…The selenium content of various foods has been determined for a few countries or regions such as Bangladesh (Bieri and Ahmad, 1976), Benin (Cresta et al, 1976), Canada (Arthur, 1972), Egypt (Askar and Bielig, 1983), Germany (Oelschlager and Menke, 1969), Japan (Suzuki et al, 1970;Yasumoto et al, 1976), New Zealand (Watkinson, 1974), Spain (Dominguez et al, 1983), U.K. (Thorn et al, 1978;Cross et al, 1978), Ukranian S.S.R. (Suchkov, 1971), U.S.A. (Morris and Levander, 1970;Schroeder et al, 1970;Moxon and Palmquist, 1980;Lane et al, 1983;Olson and Palmer, 1984), and Venezuela (Mondragon and Jaffe, 1976).…”