00593nam a22001817a 4500003000400000008004100004020001500045082001700060245011100077260006000188300001300248650003400261650004100295650001800336650002300354650001600377700001800393OSt221117b        |||||||| |||| 00| 0 eng d  a0851982999  a632.58bD93P  aProceeding of the Second International Symposium on Biological Control of Weeds / cedited by Paul H. Dunn  a.- Englandb: Commonwealth Agricultural Bureauxc, 1973  aiv,220p.  aTechnology (Applied Sciences)  aAgriculture and Related Technologies  aWeeds Control  aBiological Control  aProceedings  aDunn, Paul H.