na INLIS000000000004533 dut 0010-0322000039 J.Z. Ten rodengate marissen grondverbetering J.H. Engelhardt Engelhardt, J.H. Eerste Deel, Zevende Druk Batavia J.B. Wolters 1937 152 p.: ill.; 19 cm. 631.52 ENG g 631.52 SOIL IMPROVEMENT SOIL FERTILITY 717/KA/2022