ELECTRONIC	w   w   w dot b r i t a n n i c a dot c o m   s l a s h   p l a c e   s l a s h   a m a z o n   d a s h   r i v e r s e y l e r	w   w   w dot b r i t a n n i c a dot c o m   s l a s h   p l a c e   s l a s h   a m a z o n   d a s h   r i v e r s e y l e r	1