1971,3=23; 1971,8=24; 1971,11=25; 1973,16=26; 1974,12=27; 1974,13=28; 1974,14=29; 1974,20=30 von: [Civil engineering studies / Hydraulic engineering series]
1971,9=374; 1971,19=380; 1971,21=382; 1972,8=387; 1972,11=389; 1972,18=392; 1973,14=397; 1973,15=402; 1974,15=408; 1974,18=409; 1976,18=433; 1978,10=449 von: [Civil engineering studies / Structural research series] (ISSN: 0069-4274)
1971,12=58 von: [Civil engineering studies / Sanitary engineering series]
1973,13=1973,11; 1973,23=1973,30; 1974,16=1974,51; 1974,25=1974,7; 1974,31=1974,29; 1974,32=1974,24; 1975,8=1975,87; 1975,9=1975,88; 1975,10=1975,89 von: USA. Railroad Administration: Report (ISSN: 0093-8513)