TY  - BOOK
T1  - Transactions of the National Academy of Science and Technology, Republic of the Philippines 1991, volume XIII.
LA  - English
UL  - https://ds.mainlib.upd.edu.ph/Record/UP-1685675941123764151
OP  - 882
CN  - Q 75 T73 1991
SN  - 0115-8848
KW  - Science : Addresses, essays & lectures.
KW  - Technology : Addresses, essays & lectures.
ER  -