Double cropping and interplanting, January 1987 - May 1989 : 307 citations / prepared by Jayne T. Maclean (Quick bibliography series ; b NAL-BIBL. QB 89-97)
Double cropping and interplanting, January 1987 - May 1989 : 307 citations / prepared by Jayne T. Maclean
(Quick bibliography series ; b NAL-BIBL. QB 89-97)