By Beverly L. Adams-Gordon
By Martin Webber
By Ross, Kenneth, Wright, Charles
By Karavis, Sylvia, Matthews, Gill, Sylvia Karavis, Gill Matthews
By Kowalski, Robert
By Alan Stevens, Alan Stevens MBBS FRCPath, James S. Lowe BMedSci BMBS DM FRCPath
By Sharp, John, Byrne, Jenny
By Doreen Challen
By Davey, Patrick
By Sumitabha Das
By McGraw Hill
By Milliken, Sophie
By Staneff, Tony
By Wilde, Oscar
By Saramago, Jose
By Anon, Cw Remainder
By Rand McNally
By Capelle, Guy, Gidon, Noelle
By Longman
By Council for International Organizations of Medical Sciences
By European Foundation for the Improvement of Living & Working Conditions
By United Nations Environment Programme
By Organization for Economic Co-operation and Development
By Food and Agriculture Organization of the United Nations
By J. J. Guilbert
By World Health Organization(WHO)
By J Wedley