Madeline Groves is a professional adviser on international trade and policy. She has co-authored several CITES books including CITES and Cycads, CITES and Cacti, and CITES and Timber. Catherine Rutherford is a professional adviser on international trade and policy. She has co-authored several CITES books including CITES and Cycads, CITES and Cacti, and CITES and Timber.