American Society of Agronomy Publication text America American Society of Agronomy Publication 1989 Vol.81 Number 6 -

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155p. : ilus ; 26 cm - Agronomy 631 631 AME a - 250507 20250507082946 INLIS000000000007413 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)