ENGLISH 206 PRINCIPLE OF MARGINALITY F: THEORIE MARGINALISTE 8: PRINCIPIO DE MARGINALIDAD The economic principle that choices about the use of RESOURCES should be made such that the marginal gain from the slightest possible change in resource use is equal to the marginal loss implied by the change. 207 PRINCIPLE OF SUBSTITUTION F: PRINCIPLE DE SUBSTITUTION 8: PRINCIPIO DE SUBSTITUCION The economic principle that one thing should be substituted for another only if the NET BENEFIT of making such a change is positive. 208 PRIVATE WITHDRAWALS F: PRELEVEMENTS PRIVES 8: RETIROS PERSONALES Withdrawals from the FARM business in CASH or in kind for the personal use of the FARMER or his family or HOUSEHOLD. 209 PROBABILITY F: PROBABILITY S: PRODABILIDAD A measure of the chance of occurrence of an event. 210 PROBABILITY SAMPLING F: ECHANTILLONNAGE PROBABILISTE S: MUESTREO PROBABILISTICO A method of drawing a sample such that the probability of a particular individual being included in the sample is known or can be estimated with reasonable precision. 211 PRODUCTION FUNCTION F: FUNCTION DE PRODUCTION S: FUNCTION DE PRODUCTION The quantitative relationship between VARIABLE INPUTS and OUTPUTS for some production process with a specified level of FIXED INPUTS. PAGE 41