na INLIS000000000004329 20220407081613 0010-1021000033 220407 g 0 eng Estate rubber its preparation, properties and testing / O. De Vries Vries, O. De Suriname : Board for the Netherland Indies, 1920 xi, 649 p. : ill. ; 24 cm. 633.91 VRI e 633.91 RUBBER CROPS PLANTATIONS Incl. Index 599/KA/2021