    sentence 4, John. Ponzor pas  sparacterized street delivery. Of a  Goetleneck function. because +2 single |  ott lene daliver, to. a. recipient, oF 6   tem cota coat. than multiple fires   setivering.to the some customer    2: John Panzar points out that   it is cheaper for one firm to deliver   is than. it ts. for multiple firms  Soi ivering to the some customer