共 14 条
[1]
ALVORD HE, 1899, DAIRY DEV US YB DEP, P385
[2]
Bidwell Percy Wells, 1925, HIST AGR NO US 1620
[3]
BIDWELL PW, 1916, T CONNECTICUT ACAD A, V20, pCH5
[4]
Coxe Tench, 1794, VIEW US
[5]
DOUGLASS W, 1749, BRIT SETTLEMENTS N A
[6]
GILBERT BD, 1896, BUREAU ANIMAL IND B, V15, P7
[7]
LARSON CW, 1922, DAIRY IND YB DEP AGR, P302
[8]
LLOYD WA, 1918, B OHIO AGR EXPT STAT, V326, P63
[9]
*OH STAT BOARD AGR, 1847, 2 ANN REP, P92
[10]
PIRTLE TR, 1926, HIST DAIRY IND, P160