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I am not quite sure what you are after but this link might help;http://www.gardenaction.co.uk/fruit_veg_diary/fruit_veg_mini_project_july_1_tomato.asp
Not sure if this will reach you (1st. visit, 1st post.)Have you done a search in the box provided at top of page? Just enter MOST relevant info. and search.
PS Have just tried the search routine and it does come up with an answer if you type in 'truss of tomatoes'