na INLIS000000000001351 0010-0124001037 Soil and plant sampling and measurements. Part 1. Soil Sampling and measurements [ING-01] : Supplement to instructional video text and graphics International Rice Research Institute INTERNATIONAL RICE RESEARCH INSTITUTE Philippines IRRI 1994 28 p. : ills. ; 27 cm. 631.4 INT s SOIL PLANTS SAMPLING MEASUREMENTS IRRI. 072/2005