"Multiple Sclerosis: The Facts" => when was it published?

[R. Wong]

"Multiple Sclerosis: The Facts" the third edition is an excellent book.  
I am doing a paper on Multiple Sclerosis for my Neuroscience class and I 
was wondering:

	Exactly which month in 1993 was this book released to the
	general public?  Does anyone out there know?

Thanks in advance,

Rob Wong <u9317302 at muss.cis.mcmaster.ca>