01171cam a22003497a 4500 CHAP 20220329140612.0 971013s1928 r 00010 d 54614 55586 59738 CHAP 630.717 T7 True, Alfred Charles. 115357 A history of agricultural extensión work in the United States, 1785-1923 Washington : Government Printing Office, 1928 220 p. USDA. Miscellaneous Publications ; 15 Bibliografía, p. 202-218 BATCH-UPD 10 20130110 UCH01 0315 BATCH-UPD 10 20130110 UCH01 1917 BATCH-UPD 10 20130409 UCH01 2348 BATCH-UPD 10 20130914 UCH01 1241 CONVERSION 10 20130109 UCH01 1329 Educación agrícola. 35491 Educación agrícola E.U.A. 35513 Extensión agrícola. 39144 USDA. Miscellaneous Publications ; 15 117071 BK LIBRO 630.717 T7 BC BPP -129068 BPP 19993 59738 D i 54614 54614 0 0 ddc 0 1 0 FR BC BC 2019-12-31 LIBRO 0 630.717 T7 -129068 2019-12-31 00:00:00 2019-12-31 LIBRO