共 39 条
[2]
[Anonymous], 1959, ORGANIC REACT
[3]
Backer HJ, 1943, RECL TRAV CHIM PAY-B, V62, P815
[4]
Backer HJ, 1936, RECL TRAV CHIM PAY-B, V55, P761
[5]
Backer HJ, 1934, RECL TRAV CHIM PAY-B, V53, P525
[6]
Backer HJ, 1942, RECL TRAV CHIM PAY-B, V61, P785
[7]
BACKER HJ, 1948, RECL TRAV CHIM PAY B, V67, P451
[8]
Backer HJ, 1932, RECL TRAV CHIM PAY-B, V51, P294
[10]
BEESLEY S, Patent No. 745896