- Undeliverablepostalmaterialsshallbereturnedtothesenders.Theyreceivedmanylettersfromthesendersexpressingsympathyandwishestothem.Notifiermakesitpossibletouncouplesendersandreceivers(subscribers)ofmessages.Parcelswhichcannotbedeliveredwillbereturnedtoth...
- 19607