Charles R. Worthing text London The British Crop Protection Council 1979 Sixth edition en ix, 655 p.: ill.; 23 cm. AGRICULTURAL CHEMICALS -- MANUALS R.632.95/PES1 0-901436-44-5 210520 20210520150039 INLIS000000000008289 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)