getting company logo from LinkedIn api

[amruby]

 am using linked-in API for getting some information from linked-in. so here i using like this

@response = @access_token.get('http://api.linkedin.com/v1/people/~:(id,phone-numbers,first-name,last-name,skills,positions:(company:(name,id)))', 'x-li-format' => 'json').

so i need to get the company logo from my current and previous companies. how to add the logo in the above URL...?

Thanks
amruby