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![A graphic summary of American agriculture, based largely on the census of 1920 ... . 19 STATE ACRES TOM STATE ACMS m Iwu. 690,062 8.02 Knn. 267,447 4.21 348,254 7.33 Ind . A graphic summary of American agriculture, based largely on the census of 1920 ... . 19 STATE ACRES TOM STATE ACMS m Iwu. 690,062 8.02 Knn. 267,447 4.21 348,254 7.33 Ind .](https://c8.alamy.com/comp/2AND2M8/a-graphic-summary-of-american-agriculture-based-largely-on-the-census-of-1920-19-state-acres-tom-state-acms-m-iwu-690062-802-knn-267447-421-348254-733-ind-959-ohir-224469-849-321068-724-pa-298645-782-mo-131192-50-imu-r-779-colo-56126-425-state-achu-sti-krlr-asi-iw-su-sutz-s-n-mm-9a-ii-m-411-it-k34-it-sn-ori-!-stt-tn-3191-591-tm-luil-6s9-mm-mm-ml-fig-25corn-constitutes-probably-95-per-cent-or-more-of-the-acreage-of-crops-cutfor-silage-in-the-southwest-relatively-small-amounts-of-kaflr-and-milo-are-used-forsilage-and-in-the-northwest-occasional-2AND2M8.jpg)
A graphic summary of American agriculture, based largely on the census of 1920 ... . 19 STATE ACRES TOM STATE ACMS m Iwu. 690,062 8.02 Knn. 267,447 4.21 348,254 7.33 Ind .
![The comparative physiology of respiratory mechanisms. Respiration. FUNCTIONS OF BLOOD 103 gen concentrations, while in tropical swamps the low oxygen may be further complicated by rather high C02 tensions. The haemoglobins The comparative physiology of respiratory mechanisms. Respiration. FUNCTIONS OF BLOOD 103 gen concentrations, while in tropical swamps the low oxygen may be further complicated by rather high C02 tensions. The haemoglobins](https://c8.alamy.com/comp/REF9PA/the-comparative-physiology-of-respiratory-mechanisms-respiration-functions-of-blood-103-gen-concentrations-while-in-tropical-swamps-the-low-oxygen-may-be-further-complicated-by-rather-high-c02-tensions-the-haemoglobins-of-many-animals-show-characteristic-adapta-tions-to-these-conditions-the-blood-of-the-carp-pike-and-eel-was-found-to-have-at-15c-a-h-of-about-10-mm-and-a-at-a-very-low-c02-tension-03-mm-of-2-3-mm-krogh-and-fig-59-eo-40-60-ao-oo-teo-parta-pressure-of-oxyyen-n-mm-iy-m-fio-oxygen-dissociation-curves-of-carp-blood-at-15c-and-different-co-tensions-blac-REF9PA.jpg)