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src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader042vdocumentsusreader042viewer20220307205b0554fa7f8b9aba168e5f4ahtml5thumbnails4jpg width=140 height=200 adivdivdiv class=ts-pagebutton class=gotoPage data-page=5Page 5button div class=ts-imagea href=https:reader042vdocumentsusreader042viewer20220307205b0554fa7f8b9aba168e5f4ahtml5page5jpg target=_blank img data-url=stoneless-plum-an-experiment-in-teaching-a-plant-economy-was-showing-some-specimenshtmlpage=5 data-page=5 class=ts-thumb lazyload alt=Page 5: imageslibrarywisceduimageslibrarywisceduHistSciTechEFacsBurbankTHE STONELESS PLUM AN EXPERIMENT IN TEACHING A PLANT ECONOMY WAS showing some specimens of the remnants loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC 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