Teacher Discussion Forums

Hello,I am an English teacher in some commercial organizations .I am writing to ask if you would be so kind to help me with some information I need:I am going to teach a course of English for agriculture purposes and I am looking for a course book which could be useful for my pupils (workers in the field of agriculture research,greenhouses building,etc.).This course would be very useful if it had texts for reading comprehension,exercises with solutions,listenings.
Looking forward for your answer,
Thank you very much.

jairan,
Did you ever find the type of books you needed? I realize that my post is quite late in responding, but I would be equally interested in that sort of book. I teach at an agricultural university in Japan.