SOS:anyone know the authoriative definition of cruise tourism?? i need to find authoriative definition about cruise tourism,also anything about the history,the data n trends of this industry,i need to find more to backup my gradating thesis,but still not enough.can anyone find some useful material n tell me the link of it?paper,ebook,report---anything is ok! hope i can get some help from u,i have written my thesis for over 30,000 words,my instructor said it's terrific,but still i need to find more datas and authoriative materials about it,tks in advance!!Chinese or English,both ok! Lotus