TY  - BOOK
AU  - Richard W Samson
AU  -  Albert Upton  David A Emery
TI  - Problem solving inprovement a program for self-instruction
U1  - 371.4 
PY  - 1970///
CY  - New York
PB  - Mac Graw Hill Book Co
N1  - Richard W Samson; Albert Upton & David A Emery: Problem solving inprovement a program for self-instruction.  New York.  Mac Graw Hill Book Co, 1970.--(371.4SAM)
ER  -