共 13 条
[1]
[Anonymous], 1960, OFFICIAL METHODS ANA
[2]
Crampton EW, 1938, J NUTR, V15, P383
[4]
GLOVER J., 1957, Journal of Agricultural Science, V49, P78, DOI 10.1017/S002185960003433X
[6]
GRAINGER RB, 1961, J ANIM SCI, V20, P319
[8]
Morrison FB, 1956, FEEDS FEEDING
[9]
STANGEL HJ, 1963, UREA NONPROTEIN NITR