By Gupta A.K.   Beer J.M.   in INTER-NOISE and NOISE-CON Congress and Conference Proceedings

ISSN:0736-2935|1977|2|478-485

Institute of Noise Control Engineering‎(1977)‎

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By Nel P.C.   Barnard R.O.   Steynberg R.E.   de Beer J.M.   Groeneveld H.T.   in Field Crops Research

ISSN:0378-4290|47|1|53-64

Elsevier‎(1996)‎

Access to resources Favorite 7.2116575