00744nam a2200205Ia 4500001000700000003000500007005001700012008004100029010001700070110007700087245003800164260007500202300003800277490003500315500004700350504007500397650001600472651002300488700002700511131286BIBL20240725062709.0931005s1945    pr ab               eng    afel36001811  0aPuerto Rico.bEstación Experimental Agrícola.bRío Piedras.2Local10aStudies on Rumcby Rafael Arroyo.  aSan Juan, P.R.bService Office of the Government of Puerto Ricoc1945.  a[ix] 272 p.bill. graphs, tables.0 aResearch Bulletinvno.52Local  aIncludes a summary in Spanish (p. 261-270)  aBibliographical references included in "Literature Cited" (p. 271-270) 0aRum.2Local 0aPuerto Rico2Local10aArroyo, Rafael.2Local