na INLIS000000000003255 20230302025827 0010-0521003255 230302 g 0 eng en 633.91 633.91/VRI/e VRIES, O. De Estate rubber: its preparation, properties and testing / O. De Vries Batavia : Drukkerijen Ruygrok & Co, 1920 xi, 637 p.: ill.; 24 cm. + Index HEVEA BRASILIENSIS -- PROPERTIES -- TESTING 633.91 VRI e BK001894