// url to look up a book ISBN13 9781880418116, should be all on one line

http://ecs.amazonaws.com/onca/xml
?AWSAccessKeyId=XXXXXXXXXXXXXXXXXXXXXX <-- your id goes here.
&AssociateTag=canadianmindprod
&IdType=EAN
&ItemId=9780618918249
&Operation=ItemLookup
&ResponseGroup=Small
&SearchIndex=Books
&Service=AWSECommerceService
&Timestamp=2012-12-11T15%3A35%3A59.000Z
&Version=2011-08-01
&Signature=AeE83W1ymv7OkyA%2FtwChhaa16NN5%2BbBPZ4g8SilOSmw%3D  <-- HMAC digitally signed with your private key