00252nam a2200097Ia 4500008004100000041000800041100001600049245003300065260005000098300000600148240521s1927    xx            000 0 und d  aeng  aIX TH VOL.I  aCYCLOPEDIA CIVIL ENGINEERING  bAMERICAN SOCIETY OF PLANT PHYSIOLOGISTSc1927  a1