TY - BOOK AU - Greibach,Sheila A. TI - Theory of program structures: schemes, semantics, verification SN - 0387074155 (pbk.) U1 - 001.6 PY - 1975/// CY - Berlin PB - Springer Verlag KW - Computer programming KW - Recursive programming KW - Computer programs N1 - Includes bibliographical references and index ER -