00301nam a2200109Ia 450000500170000000800410001708200160005810000190007424500520009326000380014530000080018320260224040833.0260224s9999||||xx |||||||||||||| ||und||  a624.183 GER  aGerwick, B.C.  0aConstruction of prestressed concrete structures  aNew York: John Wiley & Sonsc1971  a411