Dear Sir,
I can send you a copy of "Bangla Academy English to Bangla Dictionary". Bangla Academy is a very respectable research organization (under the ministry of culture and education) and their dictionaries are reputed.
I do not have any copy at my hand right now. So, I cannot give you information on page number, weight and size. But, the pages will be more than one thousand in number.
Best regards,
Yeasir Rahul