In the Mail: Letters to the Editor should be kept as brief as possible. Anonymity will be preserved, if requested.

• Book ID: 117005115
• Publisher: Elsevier Science
• Year: 1969
• Tongue: English
• Weight: 193 KB
• Volume: 10
• Category: Article
• ISSN: 0001-2092
• DOI: 10.1016/s0001-2092(08)70688-4