00515naa a2200181 a 450000100080000000500110000800800410001910000190006024500880007926000090016765000230017665000090019965000100020870000180021870000200023670000130025677300640026920754842017-09-13       1942    bl uuuu     u00u1 u    #d1 aSPENCER, D. A.  aPerformance of ewes bred first as lambs compared with ewes bred first as yearlings.  c1942  aAnimal performance  aEwes  aSheep1 aSCHOTT, R. G.1 aPHILLIPS, R. W.1 aAUNE, B.  tJournal of Animal Sciencegv. 1, n. 1, p. 27-33, Feb. 1942.