Dear friends; Thank you for your kind letters and demands for a copy of the article (Amer. Bee J Sept. 2000). Due to the huge number of your kind e-mails, please be patient until I find time to answer to your questions and demands. Please also notice to include your address if you want the hard copy. The electronic version contains only text without figures as it is in txt format. Best regards Kamran Fakhimzadeh