The price of shipping is included in all cards , if you buy a single card it ' s not 40 cents for it AND the Card to ship it . it costs as much as a stamp and envelope the price of a card . <| sep |> Je parlais d ' un film sur ce groupe de punk , il parle de Home de YAB . <| sep |> Ok , cool . Thanks . It is a bad mistake . The article justifies it , though , it was a Asian themed event . More funny than anything , really . Bush had a lot of these the so called Bushisms . I ' m sure Trump will as well . Being president isn ' t easy . Let ' s not pretend Obama isn ' t the most intelligent and eloquent US president in ages , though . <| sep |> How many type of cross sections are there ? There is a cross section for every possible reaction . Cross sections are often reported as a function of energy . Or you can report the differential cross section , as a function of the scattering angle . The total cross section is then the integral of the differential cross section over all angles . Interaction cross section , production cross section , and . ? Don ' t worry about the words interaction and production , they ' re both referring to the same thing the cross section of some reaction . Then how do I define the cross section ? scatteringtheory is how cross sections are handled in HEP . You can rearrange that equation so that the cross section is just the collision rate divided by the luminosity . That makes sense , since the cross section should have units of area .