00575nam a2200169Ia 4500001000700000003000500007008004100012010001100053040000900064100003000073245014300103260003100246300001100277502008300288650001800371650001600389Z_4774CHAP220113s1988    xx            000 0 und d  a167826  cCHAP  aSolís Ramírez, José  aDirect and correlated responses to selection for high or low ultrasonic backfat depth in southdown sheep  /cpor  José Solís Ramírez  aMassey  :bEl autor,c1988  a185 h.  aThesis (Master of agricultural Science in animal Science) -- Massey University  aGanado lanar   aUltrasonido