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Becker 's actions , taken soon after he had bought the property , may also seem to support this supposition : he sought advice from a friend , Mr Graham Clarke at Adelaide Chemical and Fertilizer Ltd. about the proper treatment of the land and was told that Mr David Riceman , of what was then the CSIR Division of Biochemistry and General Nutrition , could probably help him . Becker 's actions , taken soon after he had bought the property , may also seem to support this supposition : he sought advice from a friend , Mr Graham Clarke at Adelaide Chemical and Fertilizer Ltd about the proper treatment of the land and was told that Mr David Riceman , of what was then the CSIR Division of Biochemistry and General Nutrition , could probably help him . In addition to my general reservations about affirmative need , I am concerned that an order incorporating this " threshold , " coming on the heels of Schnuck and General Nutrition , will cause considerable confusion .