TY - BOOK A1 - TI - 9th plastics technology seminar,achen,8th to 10th march 1978 PB - کتابخانه مرکزی دانشگاه صنعتی امیرکبیر SN - 91688529 UR /book/91688529/9th-plastics-technology-seminarachen8th-to-10th/ ER -