. . . . . "billingPeriod" . . . "Embedded JSONLD-in-HTML Statement 180" . "Embedded JSONLD-in-HTML Statement 181" . . . . . . "Embedded JSONLD-in-HTML Statement 183" . . . . . . "The time interval used to compute the invoice." . . "billingPeriod" . . . "The time interval used to compute the invoice." . . "Embedded JSONLD-in-HTML Statement 182" .