00644nam a2200205Ia 4500001001000000003000500010008004100015010001100056040000900067082001700076100001600093245008000109260010500189300001000294440001900304500003200323650004800355650001500403700002000418Para_7414CHAP220125s1929    xx            000 0 und d  a206281  cCHAP  aPA-C 632 B85  aEyer, J. R.  aThe preparation and use of oit sprays  /c by J. R. Eyer and R. F. Crawford  aNew Mexico  :b New Mexico, College of Agriculture and Mechanic Arts Agricultural Experiment Station  a20 p.  aBulletin ; 172  aEnc. con impresos similares  aFitopatología x colecciones de escritos   aFumigantes  aCrawford, R. F.