共 33 条
[1]
BARBER G, 1948, NEW JERSEY AGR EXPT, V742
[4]
DIETER CE, 1948, Patent No. 2442760
[6]
GERTLER SI, 1948, Patent No. 2436919
[7]
GERTLER SI, 1947, Patent No. 2428844
[8]
GERTLER SI, 1948, Patent No. 2436920