 | Eduardo Somarriba - 1995 - 80 páginas
BARKER , DJ ( 1991 ) An economic analysis fo farming coffee ; trees at Turrialba , Costa rica : comparing small farms with poró ( Erythrina poeppigiana ) only to those with both laurel ( Cordia alliodora ) ; poró . Tesis Mag . | |
 | 1995 - 124 páginas
An economic analysis of farming coffee and trees at Turrialba , Costa Rica : comparing small farms with poro ( Erythrina poeppigiana ) only to those with both laurel ( Cordia alliodora ) and poro . Turrialba ( Costa Rica ) . 1991. | |
 | Luis Alberto Camero - 1999 - 442 páginas
An economic analysis of farming coffee and trees at Turrialba , Costa Rica : comparing small farms with poro ( Erythrina poeppigiana ) only to those with both laurel ( Cordia alliodora ) and poro . Turrialba ( Costa Rica ) . 1991. | |
 | H. W. Fassbender - 1993 - 540 páginas
El ecosistema natural, los recursos naturales, los agroecosistemas y sus modelos edafologicos; Los agroecosistemas, con especial referencia a los sistemas de produccion agroflorestales; El ciclo del agua; Ciclo de la materia organica; Ciclo ... | |
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