Nongyak wisaeng
By: [chŏja Yi Myŏng-su oe 3-myŏng]
Publisher: Kwahak, Paekkwa Sajŏn Chʻulpʻansa
Published: 1984
Place of publication: [Pʻyŏngyang]
Language: kor
Number of pages: 511
Subjects: Toxicology; Safety measures; Agricultural chemicals; Dose-response relationship