A Textbook of Advances in Drug Delivery Systems by Ayesha Parveen Sayeeda. Great resource for pharmacy students and professionals, covering drug delivery advancements. Old stock product. if you have any doubt comment me. First check all pics after that buy,if you have any questions ask me. Needful person buy it. No Return No Exchange,No Swap, No Coins,No Unfair rating.Needful person buy it.