/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: hazriraziff https://cdn.slidesharecdn.com/profile-photo-hazriraziff-48x48.jpg?cb=1523200918 An expert 'problem solver' must be endowed with two incompatible quantities, a restless imagination and a patient pertinacity - Howard W. Eves