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- [22] HOW TO AVOID CUSTOM HYBRID CIRCUIT PITFALLS ELECTRONIC PRODUCTS MAGAZINE, 1972, 15 (07): : 36 - &
- [23] PERPETUITIES PITFALLS AND HOW BEST TO AVOID THEM REAL PROPERTY PROBATE AND TRUST JOURNAL, 1971, 6 (02): : 155 - 177
- [27] BUYING SEED - THE PITFALLS AND BLUNDERS AND HOW TO AVOID THEM ALBERTA CONSERVATION AND RECLAMATION CONFERENCE 88, 1989, : 139 - 144