Thomson, J.R. text London Leonard Hill 1979 eng vii, 252 p. : ill. ; 23 cm J.R. Thomson PLANT PROPAGATION SEED TREATMENT SEED CERTIFICATION 631.53.01 631.53.01 THO a 0-249-44155-1 230915 20230915111412 INLIS000000000000429 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)