00296nam a2200085Ia 4500008004100000100001700041245007700058260006700135300000800202220214s9999    xx            000 0 und d  aDickenson PB 0aNatural rubber and its traditional use in underground pipe sealing rings  bNatural Rubber Conference, Kuala Lumpur, 1968. Preprintsc1968  a10p