식양토질논에서의 관개방식과 배수구 깊이에 관한 연구(3) -포양건조도면에서-

Studies on the Irragation Method and the Depths of Drainage Ditches in Paddy Field with Clay Loam Soil. -In the Aspect of Increasing Drying Progress of Soil in the Field-

  • 발행 : 1970.11.01